Luke and Eva were pleased to hear from us again, and ecstatic to hear that we were considering taking them up on their generous offer. First, I had several questions to ask Luke, and so much ground to cover that an online chat session no longer sufficed. We exchange cellphone numbers and I called him directly.

I stressed to him that I wanted to ensure that all four of us were on the same page, and that it would be easier if the two of us acted as the "spokesman" for each couple. He seemed to appreciate that approach. I explained where Monica and I stood regarding the visit, expressed our concerns, and summarized what we had discussed. Luke was very gracious and understanding, and assured me that he and Eva had similar conversations and debates before they made their proposal.

We talked for over two hours and covered every question and every detail of our plan. We then agreed to review everything we had discussed with our wives and come up with a final decision. I recapped our entire conversation to Monica, and she seemed satisfied.

I typed into our chat window: "We're good to go if you are." I then let my index finger hover over the Enter key as I looked to Monica for one final nod of approval. I pressed the key and waited.

***

On the plane ride to Boston, my stomach churned. I hadn't felt that nervous since our wedding day. I couldn't believe what we were about to do. Never in a million lifetimes would I have imagined Monica agreeing to something like this. I had noticed a profound change in her personality, though, since we first began posting her photos online. She was more confident than I had ever seen her. She smiled more often, and held her head high wherever she walked. While she had been somewhat shy throughout her life, I now noticed her interacting with people in a more friendly and enthusiastic manner. I even noticed a flirtatious side of her that I hadn't seen since we were dating.

As for me, I questioned how I would react when push came to shove. I tried to picture Monica kissing Luke in my mind and searched my emotions. In a way, just the thought of it was terrifying. In another way, it was incredibly thrilling. Instead of sitting in that plane seat, I felt as though I had leapt out of it and was hurtling toward the earth at deathly speed.

I thought about Eva and her big, dark eyes and succulent lips. I pictured the contour of her hips and buttocks. Could I really summon the courage to kiss those lips and explore those contours? The last time I had touched a woman's naked body for the first time I was twenty years younger. I never thought I'd have the opportunity to do it again.

Luke and Eva were waiting for us in the baggage area. Luke was a little taller than I had imagined, and Eva was even more stunning in person than she appeared online. She wore a tight little tee-shirt that stretched across her ample breasts, white shorts that accentuated her shapely ass, and high-heeled summer shoes that complemented her well-toned legs. Not only did she look fantastic, but she smelled good. I got a good whiff of her perfume when we exchanged a hug, and it ignited a tingling sensation all the way down to my groin like a lit fuse on a canister of dynamite.

We drove straight into the city and secured a table at a bustling sports bar down the street from the arena where the concert was held. We ordered food and drinks while making small talk with our hosts. Although Monica and I worried about the awkwardness of meeting them in person, there were no uncomfortable moments whatsoever. Both Luke and Eva were so funny and engaging, they put us at ease immediately. Time flew by so quickly that we nearly missed the beginning of the concert.

The concert was amazing; a forty-year retrospective of the band's entire career, played backward from modern-day to its origins. Several songs were played that hadn't been performed live in decades. It was a fitting farewell to their long-time, hard-core fans. Afterward, we drove back to Luke and Eva's home. It was an impressive house located in a well-manicured, upscale neighborhood. After a brief tour, the four of us settled in their living room. Luke played the role of bartender and mixed margaritas while Eva prepared a nice plate of cheese and crackers. We continued to chat as if we were old friends. Monica and I shared stories we had told countless times before, but to a whole new audience. Aside from an occasional colorful remark or flirtatious gesture, our conversation was not unlike any other that we had with our friends back home.

During a lull in the conversation, Luke went to the kitchen to make another round of drinks while Eva turned on the television and found an old sitcom. When she returned to the couch, she sat between me and Monica. Luke then took the only spot remaining on the couch, which was at the far end next to my wife.

As we continued to chat and pay little attention to the sitcom, I became nervous once again. I could feel my heart pounding, and my palms were sweating. The mere fact that my thigh was touching Eva's sent waves of adrenaline through my bloodstream. I could feel the warmth of her thigh, and it was thrilling. I felt like a young man on his first date. I could sense that something immensely significant was about to happen - something I would remember the rest of my life.

Not surprisingly, it was Eva who made the first move. Of the four of us, she was by far the most outgoing. She placed her hand on my thigh and gently rubbed it. The waves of adrenaline magnified, and the proverbial butterflies in my belly fluttered frantically. She leaned against me and placed her head on my shoulder. I took the cue and placed my hand on her bare thigh. Her skin felt so smooth and soft. Although it was exhilarating, it felt wrong. I thought I shouldn't be touching another woman's thigh - especially not a married woman.

I glanced at the other end of the couch. Luke and Monica sat with their hands in their laps. Shit, I thought, maybe Eva and I were moving too quickly. Then Luke's hand moved to Monica's knee, and after some hesitation, she placed her hand on top of his. As soon as she did, she looked at me, as if she were seeking my approval. I smiled and nodded. Although I had so often questioned how I would feel about seeing my wife displaying affection toward another man, when the moment finally arrived I realized it wasn't as traumatic as I had feared. Instead, it was oddly thrilling.

As Eva and I continued our light petting, I couldn't help but steal glances at the other end of the couch from time to time. Monica and Luke continued to hold hands and stared straight ahead at the TV screen. I inhaled Eva's sweet scent and explored her silky thigh with my roaming hand. It took me quite a while to notice that Eva's other hand was softly stroking Monica's inner thigh. I instantly felt an involuntarily expansion in my shorts.

Although we all knew why we were there and what would happen at some point during our stay, it seemed as though all four of us were moving very slowly and deliberately, taking baby steps toward that destination. It was Eva who once again pushed us further in that direction. During a commercial break, she suddenly leaned toward Monica, placed her hand on Monica's cheek, and softly kissed her on the lips.

What began as a slow-and-sensual kiss soon turned intense. The two women turned fully toward each other and continued their make-out session while Eva's hands explored Monica's body. I glanced at Luke, whose eyes were wide. He looked at me and smiled. He then mouthed the words "holy shit," which forced me to stifle a nervous laugh. I couldn't believe my eyes. It felt as though I were watching a scene from a play - an extremely erotic play.

Eva's hands moved to Monica's tits while Monica caressed Eva's thighs. It was completely mesmerizing watching these two extraordinarily beautiful women make out right in front of me. I could see their mouths open and their tongues playing. Just when I thought it couldn't get any more intense, Eva suddenly turned away from Monica and kissed me.

It was so unexpected that I didn't have time to think about it. I just closed my eyes and went with it. Her plump lips seemed to melt in my mouth. Although I hadn't kissed many women in my lifetime, I had kissed enough to know that Eva was an exceptionally good kisser. I was so enthralled that I temporarily forgot to check what was happening at the other end of the couch. Was Monica okay with this? We had agreed that we would stop whatever we were doing if either of us felt uncomfortable at any time. We even worked out a secret signal prior to leaving Chicago. I began kissing and nibbling Eva's neck and peeked beyond her to see that Monica and Luke were kissing. No signal. She must be okay, I thought.

Seeing my wife kissing another man, I experienced another surge of adrenaline. It felt like panic, but logically I knew there was no reason to panic. Like the thrill you get from riding a roller coaster, although you know you're safely secured, your mind and body still responds as if you're in danger. The flow of time seemed to slow to a crawl at that moment. I became keenly aware of every one of my senses with each passing second: the sight of my wife kissing another man, the taste of Eva's lips, the slight touch of her breasts pressed against my body, and the sweet fragrance of her perfume.

I felt another sensation: Eva's hand on my cock. She squeezed it through the fabric of my shorts and loudly proclaimed, "Ooh, I think someone was excited to see two chicks making out!" That provided a much-needed tension breaker, as all four of us broke out into laughter. Eva unzipped my fly, reached inside, and pulled out my rock-hard cock. I wasn't used to a woman being so aggressive.

"Mmm," she purred, "it looks as tasty in person as it does over the webcam."

With that, she leaned forward and took it in her mouth. I instantly looked at Monica, but she was busy with Luke and didn't notice. Again, I felt a pang of guilt, as if I shouldn't be allowing this strange woman to suck my cock. I had to reassure myself that it was okay. Monica and I had discussed this beforehand. We agreed we would be okay with any sexual contact. I tried to relax. Her lips felt incredible, and she performed an unfamiliar movement where she twisted her head in one direction while twisting her hand at the base of my cock in the opposite direction. It felt amazing. I made a mental note to teach Monica that trick.

At the other end of the couch, Luke was pulling Monica's shirt over her head. He kissed her while reaching behind her to unclasp her bra. When he succeeded, he lowered his mouth to her breasts. Monica gasped and leaned her head back. I reached toward her and stroked my fingers through her hair. Somehow, it was reassuring to make that physical connection. We may have been enjoying the company of others at that moment, but we still shared an unbreakable connection.

Eva loudly slurped and moaned around my cock. She was really getting into it, and her enthusiasm was intoxicating. I could already feel myself reaching the point of no return. I reached down and gently pulled her away.

"You're gonna make me cum," I whispered.

"Oh, no you don't," she said rather loudly. "Not yet!"

Luke chuckled and said, "What do you all say we take this party upstairs?"

We all agreed, and Monica and I followed their lead up the stairs, half-dressed. I grabbed her by the hand and whispered, "Are you good with this?" She nodded and smiled.

When we reached their bedroom, the four of us finished undressing completely, and then paired up on the bed as we had before, with both men on top of the women. I slid my way down Eva's body and lapped at her pussy. Monica had always maintained a neatly-trimmed triangle of pubic hair, but Eva's pussy was completely bare. It was a different experience to lick a bare pussy. I liked it - a lot. I made another mental note to ask Monica to shave herself bare as well.

Although Monica and I no longer had to be quiet during sex, it was a hard habit to break after twenty years of silent fucking. Luke and Eva evidently had no difficulty in that regard, as they were both extremely vocal during sex. Eva moaned loudly and dug her fingernails into my scalp as I went down on her. On the other side of the bed, Luke was constantly talking to Monica. With his head nestled between her thighs, he repeatedly paused to tell her how good she tasted, how wet her pussy was, and to confirm that she liked whatever he was doing. Monica nodded enthusiastically at that one.

Luke kissed his way up Monica's body until he reached her lips. They kissed for a moment, and then traded places, with Luke on his back and Monica positioned between his legs. She paused for a moment and looked at me before taking his cock in her hand. Unless I missed some subtle action on the couch, it was the first time she had touched his dick.

She seemed to wait until she received my approval before she lowered her mouth onto it. Lower and lower she worked her way down his shaft until at last it completely disappeared from view. When she hit bottom, Luke issued a deafening, "Ugh! Oh my god!"

"How does it feel, honey?" Eva asked.

"Fucking incredible!" he shouted. He then turned to me and said, "Have I mentioned how lucky you are?"

I expected to feel many different emotions that night: jealousy, anxiety, excitement, arousal, and probably countless others. What I never expected to feel was the sensation of pride. At that moment, however, I was so proud of my wife. I was proud of the way she had overcome her shyness and lack of sexual curiosity. I was proud of the skill she had developed and the way she was able to provide such intense pleasure. I was also proud of myself for having the courage to share that talent and allow another man to experience it. I felt incredibly generous at that moment. I knew exactly what Luke was experiencing, and I was proud to have allowed that to happen.

Although I was immensely enjoying licking Eva's pussy, I really needed to be inside her. I made my way back on top of her and, while pressing my lips to hers, slid my hard cock along her slippery slit. This was it. With one thrust, I would officially be having intercourse with a woman other than my wife. I hoped to make eye contact with Monica one last time, but she was busy, as her head was bobbing in Luke's lap. I positioned my cock at Eva's entrance and slowly entered her. Her eyes widened and she gasped. With each movement in and out of her slick canal, I fed her a little more, plunging deeper and deeper. I thrust myself inside to the hilt, and she gripped my back with her fingernails and held me there.

"Oh my god!" she shouted. "You're so fucking big!"

My ego swelled. I thought, "I'm fucking another man's wife." It was surreal. Not only was I fucking her, but I was hitting spots that he had never touched before. I felt incredibly powerful in that moment. I couldn't help but fuck her harder and faster. She spread her legs as wide as they would stretch and grunted loudly with each thrust.

"Oh, yes!" she shouted. "Fuck me! Fuck me harder!"

I increased my pace, slamming myself hard into her, shaking the bed with each movement. The sound of slapping flesh-on-flesh filled the room. I could feel myself reaching the apex and there was no turning back.

"I'm gonna cum," I warned her.

"Cum on my face!" Eva shouted. "Please, baby!"

The words were like music to my ears. I quickly scrambled to the head of the bed and straddled her torso. I stroked my cock over her face. She closed her eyes, opened her mouth, and stuck out her tongue. The first spurt splashed dead-center on her tongue. The next one splattered across her left cheek. By the time I finished, her entire face was covered. I had finally lived my lifelong fantasy.

Eva seemed pleased with herself. She gently brushed some cum from her long eyelashes and she smiled and giggled.

"So?" she said. "Was it everything you ever imagined it would be?"

I nodded enthusiastically. "Even better. Thank you."

As Eva excused herself to the bathroom, I lay and watched Luke plow into my wife. I was so wrapped up in my own activities that I didn't even notice the moment they began. I watched this live-action porn movie up-close, starring my own wife. It didn't seem real. Nothing that happened that evening seemed real, and yet it was.

Eva joined me on the bed, and I spooned her from behind while the two of us watched. I could feel Eva's firm ass pressing against my wet, half-limp, cock. I noticed one of Monica's hands was within reach, and I stretched out and grabbed it. It felt comforting to have that contact. Luke's face reddened and he groaned loudly. His movements suddenly halted and he held himself in place as his muscles quivered. A moment later, he rolled off of Monica and lay beside her, exhausted.

We lay in silence for a moment as we all collected our breath. Then Luke began laughing uncontrollably. The realization of what we had just done seemed to dawn on him.

"Did that just happen?" he said.

His laughter was so contagious, we all joined him. It was as if we were naughty school children who had just gotten away with playing a prank on the principal. None of us said a word for a while. It didn't seem necessary. We simply lay in each other's arms, caressing our naked bodies, until I announced that I was tired, and that we should call it a day.

When Monica and I closed the door of the guest room and crawled into bed, I took her in my arms and kissed her. "Well," I said, "we did it."

"We sure did," she said with a soft chuckle. "And the earth didn't crumble at our feet."

"Did you expect that it would?" I teased. "I lied about being tired, by the way. I am completely wired right now. I've never taken hard drugs, but this is what it must feel like. Jim used to talk about getting a rush of endorphins while he was running those marathons. I can only imagine this is what he meant."

"I feel it, too," she said. "I don't know if I'm going to be able to sleep at all tonight."

We proceeded to recap the events of the evening from beginning to end. We covered every minute detail and every emotion we had just experienced. We got so worked up just talking about it that I couldn't help but take her right there and then. I felt this strange, but urgent, need to "reclaim" her. I needed to feel that deep connection with her and validate that nothing had changed between us. She didn't disappoint. In fact, I felt a deeper connection to her than I had ever experienced before.

***

The next three days were a whirlwind of activity, both sexual and otherwise. We hardly ever stopped moving from sunrise until the wee hours of the morning. We hardly got any sleep in those three days, yet strangely enough, we didn't seem to need sleep. We didn't even seem to need food, although we ate plenty of it. It was as though we could have survived on adrenaline and endorphins alone.

Friday afternoon, Luke and Eva took us on a tour of Boston. We saw all of the main historical sites, shopped at Faneuil Hall, and ate pizza in the North End and sea food along the Harbor. In the evening, we had drinks together while sitting on the back deck of Luke and Eva's home. They had a large heated pool surrounded by high fencing, and we took advantage of it to go skinny-dipping together - another item to cross off my "bucket list."

That night, Luke played some slow-tempo music on his sound system, and Monica and Eva treated us to a seductive strip tease. They took turns slowly undressing each other while they swayed to the beat. They kissed and nibbled each other's necks and breasts. Just when I was hoping to see a little live "69" action, they surprised me by crawling across the floor to where I was seated.

"It's time to cross another item off that bucket list," Monica purred.

She and Eva removed my shorts and boxers and proceeded to give me the most amazing double blowjob. For as long as I live, I will never forget the sensation of feeling two mouths, lips, and tongues simultaneously caressing my cock. They looked so beautiful working in tandem. I wished I had the forethought to take a photo, but I really didn't need to. That moment is permanently etched into my memory bank.

Keenly aware of Monica's aversion to bodily fluids, Eva took one for the team and accepted my load when the time came. Aside from that one brief accident with Monica, it was the first time in my life I ever finished in a woman's mouth. It felt so amazing - and incredibly dirty. Another item checked. The two ladies then crawled across the floor to where Luke was seated and performed the same ritual. Evidently, my theory that it was every man's fantasy to have a threesome was true for at least the two of us.

Later that night, after Luke and I had enough time to recover, we decided to grant Eva's fantasy of having two men at the same time. Monica had mentioned that we had worn her out over the past two days, and gladly sat and watched as Luke and I double-teamed his wife. We took turns with her mouth and pussy in various positions we had only ever seen in porn movies until eventually we couldn't hold out any longer. I truly believe that Eva could have gone all night if we had the stamina.

Saturday was our final full day in Boston. It came much more quickly than I had imagined. The girls decided to do more shopping, so Luke suggested we split up for the day. He took me to an Irish sports pub that had everything a man would ever need: beer, food, pool tables, TV's, and plenty of cute college girls to ogle. We shared lunch and a few beers while reviewing our wild weekend.

"Did you ever think you'd do something like this?" I asked him.

"Never in a million years, man," he said. "I grew up in a conservative household. I've always been a one-woman man. For the past twenty years, I never really even thought about having sex with anyone but Eva. But I'm glad we did this."

"Me, too," I said. "Eva is amazing. You're a very lucky man."

"And so are you," he said, raising his glass. "To a couple of lucky men."

We watched a ballgame on one of the monitors. It was only the first inning, but the Sox were already trailing by three runs.

"I just hope this doesn't change anything for any of us," I said.

Luke took a swig from his mug. "I'm not worried about it. Eva and I are solid as a rock. And you and Monica seem just as solid. I think the only time problems arise is if people do shit like this behind each other's backs."

"Or if they do it because they think they have to, to fix their marriage or something," I added.

"Exactly," he said. "Eva and I didn't do this because we needed to. There are plenty of things we do that we don't need to do. We don't have to go to concerts or restaurants. We don't have to travel. We do these things to gain fun and lasting life experiences - and because there isn't a compelling reason not to. In a nutshell, that's why we're here now. If we weren't completely confident about our relationship, or if either one of us had any doubts or insecurities or hesitation whatsoever, you wouldn't be sitting here right now."

I understood him completely, as I could have made the same assertions myself. Monica and I had communicated every step of the way throughout this adventure. We had no choice but to be bluntly honest with each other, as we knew it could have had dire consequences otherwise. It was that level of communication that made it possible for us to step outside of our comfort zones and gain new experiences.

That night, we surprised Monica by handing her a blindfold. It was time to fulfil her fantasy. We all undressed and led Monica to the bed. Luke secured her wrists and ankles to the bed with a few of his old silk ties. We then began caressing her entire body from head to toe. We rotated positions around the bed so that she never knew for certain whose hands she felt.

We took our time. There was no rush. We all wanted Monica to enjoy the best experience possible. On my signal, we began adding kisses and licking to our hand movements. I watched as Monica began breathing more heavily. I could tell she was enjoying herself already, and yet we had only just begun.

I noted that Eva had positioned herself between Monica's thighs. When she began licking Monica's pussy, I nudged Luke, as he wasn't paying attention. We were both mesmerized watching Eva go down on a woman for the first time in her life. She must have known what she was doing, because Monica began moaning. It was a soft moaning at first, but grew more intense the more Eva worked on her with her magic tongue.

I leaned forward and kissed Monica's lips. She returned my kiss with passion, sticking her tongue in my mouth and moaning. Luke had his mouth over one of Monica's nipples as his hand played with her other stiff nipple. Monica arched her back and groaned with her lips pressed against mine. I felt her body quiver and knew that Eva had hit the mark.

Eva crawled on top of Monica's naked body and kissed her. With both women's heads in such close proximity, I took advantage of their position by kneeling over Monica's head. Monica licked my scrotum while Eva took my cock in her mouth. At the foot of the bed, Luke untied Monica's ankles, lifted them high off the bed, and inserted himself inside her warm, wet, pussy. Monica's loud moan sent vibrations straight up my shaft and into Eva's mouth. Every now and then he would stop fucking Monica and insert his cock into Eva from behind. He switched back and forth, again and again.

After several minutes, Luke and I switched positions. All three of us would switch positions around Monica several more times before we were completely sated. For the first time since I was a newlywed, I managed to cum twice in one session: once in Eva's mouth and once in Monica's pussy. I lost count of the number of orgasms the two women experienced. Needless to say, a good time was had by all. It was the perfect nightcap to our long weekend adventure.

***

It's hard to believe, but it has been nearly a year since that weekend. We have kept in touch with Luke and Eva online. We invited them to stay with us some time, but our schedules never seem to mesh. Sometimes, life simply gets in the way. Although we thoroughly enjoyed our time with them, it wouldn't be the end of our world if we never see them again. They have become like any other friends who gradually drift apart over a long period of time.

I often find myself thinking about that weekend, and about my time with Eva. We never had any one-on-one time, but I clearly recall those quiet moments we had together, simply holding each other after a bout of incredible sex. Heading into that weekend, I worried that I might develop feelings for her, but I found that there is a great difference between romantic sex and casual sex.

It would be inaccurate to say that I don't have feelings for Eva, but sex with her was entirely different than sex with my wife. I suppose if I were to make an analogy, the feelings I have for Eva are similar to the feelings I have for every other good friend that I have had in my lifetime. The only difference is that I didn't have sex with any of those other friends. Although I had thought that would be a major difference, it turns out not to be the case. I care deeply about Eva and love her the same way I love every other friend I have made. That love, however, is quite different than the love I have for Monica.

As for Monica, she continues to benefit from the confidence she gained from that experience. She seems happier than ever and has no regrets about what happened. Although she had always been hesitant to try new things before, she has become bold and adventurous since we returned from Boston. In fact, she recently announced that she wants to go sky-diving for her fortieth birthday. I told her to go for it, but even I'm not that adventurous.

Our sex life has been incredible since we returned. We now have sex several times a week, but it's not the quantity that impresses me, but the quality. Monica is now far more vocal than she ever was in terms of letting me know what she wants and how she wants it. We've incorporated a few of the "tricks" we learned from Luke and Eva, and they have enhanced our sex life immensely. And although Monica isn't exactly enamored of it, she now isn't entirely repulsed by the idea of having my cum on her face or in her mouth. She has learned how much of a turn-on it is for me, and I think that excites her enough to put up with it.

Last night, she walked into our bedroom after our evening ritual wearing a teddy she must have just purchased, as I had never seen it before. As if that weren't surprising enough, she then produced from behind her back a can of whipped cream.

"Who's up for a little dessert?" she asked with a sly grin.

If there is one thing I learned from our experience, it's that I didn't miss a thing by not sleeping with more women before meeting Monica. Although having sex with Eva was a fantastic experience that I will never forget, it could never surpass the heights of pleasure and intimacy provided by my wife, for the simple reason that no one else understands me better than she does. I realized that my "mid-life crisis" was based on the fallacious premise that I had somehow denied myself of some incredible sexual experience, when in fact the greatest sexual experience one can ever enjoy is with a partner who understands you completely.

In the end, I learned that everything for which I had ever longed, and the means with which to experience every fantasy I had ever imagined, was right there in front of me the entire time.