I was caught shtupping a twenty-year-old in my back yard.

Suddenly, a rush of blood went to my head, I broke out in a sweat, and steeled myself for my wife's wrath. But Sarah, with surprising aplomb, looked over my shoulder, raised her hand, and wiggled her fingers at Kate.

“Hello Kate,” she seemed completely at ease. “We really enjoyed the theater tickets.” God bless her, Kate remained at the door and raised her hand hesitantly.

I scrambled to my feet and held out my hand to Sarah, who took it and stood. We were a sight, her nimble, lithe young body next to my sagging, gray-haired, aging pile of flesh.

My wife bent and picked up Sarah's skirt and blouse, looking at them as if an alien had dropped them. “And who might you be?” she asked. She held the items out to this stranger.

“I’m Sarah, I sat next to John at the show. He offered me a ride back to my dorm, and I asked to come here first. You have a lovely home.” She stepped into her skirt, sans panties which were under the chaise. I stood there fumbling to retrieve my pants, not speaking, thinking that I could only make things worse.

“And you are showing him your gratitude, I see.” Kate has a very dry wit.

“Well, actually, he was treating me to the sexual skills of a mature man, something I do not often receive from men my age. I’m sure that you know what I mean.”

By now, I had my clothes back on. “I was just about to take Sarah home,” I turned sideways passing Kate in the doorway, not sure what her reaction would be. Can a wife who has just returned from seeing her lover expect her husband to be chaste? Somehow, I feared she might.

She looked askance at me and asked Sarah if she would like a drink. To my dismay, she accepted. The next thing I knew we all were sipping wine on the patio. Sarah sat beside me on the love seat. I couldn't escape the feeling of a teen sitting in front of a critical parent.

“To allay any concerns you may have, you cannot get pregnant. He is shooting blanks; he was fixed many years ago.” Kate said this, looking me straight in the eye, unsmiling. “And he is old enough to be your grandfather.”

She poured another glass of wine for herself and waved the bottle at us; there were no takers.

“I understand that you were busy this evening yourself,” Sarah said with a smile. “Was it everything you hoped it would be? I would love to hear all about it.”

I was starting to like this kid more and more, she has moxie. Kate raised her eyebrows, but kept her cool.

“As they say in Hawaii, it was the finest kind, none better.” This time she smiled a rather smug, satisfied smile at me. Sarah patted my leg.

“I really like it when everyone gets what they need. It keeps the karma balanced. Well, I should be getting home; can I call an Uber?”

Kate stood and shook her head. “Certainly not; you can stay the night, or John will be happy drive you back, I insist.”

Sarah relaxed then, and after squeezing my thigh, continued to quiz Kate about her extracurricular sex. I really didn't want to hear her rave about the guy she was fucking. Even now, it hurts me to think about her lying under him and welcoming his big cock into her waiting pussy.

“How long have you been seeing a lover outside of your marriage? And how did the two of you arrive at the decision, or did you do it on your own? I’m mad to hear how it works.

My wife explained how I had persuaded her that she needed more and better sex than I could provide at my age. She praised my selflessness and assured Sarah that in our early years, our sex life was wonderful. Not all of it was strictly true.

The evening's activities and drinks were taking a toll on me. I soon found myself nodding off, not following the “girl talk”.

I vaguely remember Kate telling me, “Go to bed, you old Romeo, I’ll take Sarah back to her dorm.” Then, feeling two sets of lips kiss my cheeks, I didn't remember when Kate crawled into bed with me.

Next morning I awoke from a dream that I was fucking a beautiful young woman with my miraculously hard cock. I opened my eyes to see my wife gazing into them and felt her hand stroking my miraculously almost hard cock.

“You’re dreaming about her, aren't you? You haven’t gotten this hard in years. But you neglected your clean-up chores last night, so I guess you’ll have to make up for it this morning.”

She squeezed my balls a little harder than seemed necessary; a little payback? I wondered. Her pussy was redolent of Steve’s cum mixed with her aroma, and her labia were quite swollen still.

She grabbed my head and held it steady while twerking her pelvis up and down so that my tongue slid from her brown star to her clit and back. When she came, a gout of their cum squirted into my mouth, gagging me.

Finally she sucked and stroked my cock until I achieved the orgasm that had eluded me last night. These days that takes hard work. "You lucky devil you," was all she said about the previous night. Life went back to normal after, no recriminations or complaints.

I am accustomed to being alone a lot. Kate has a very active social life: it’s lunch with so and so, coffee with another one, exercise class, her two book groups and volunteering at the library.

And then, there is Steve. She keeps herself busy.

I appreciate that she usually tells me when she will be home; and I try to be there too, but for the most part I tune those other things out, especially the Steve meetings. Out of concern for my feelings, she rarely goes with him at night, or overnight.

My most gratifying times are the unstructured hours that we spend together, just the two of us. That is when some genuine feelings of affection pass between us.

Several weeks later, when she informed me that Sarah would be coming for dinner, it took me a moment to recall who she meant. It turned out that they had been seeing each other.

“She has become like the daughter I never had,” Kate said when I asked about them. “She continues to be very curious about our lifestyle, and she can’t talk about sex with her mother, so I am her sounding post. She speaks admiringly of you, and she is very interested in meeting Steve.”

“Good god, is SHE going to cuckold me too?” I said with a laugh. “How much can my ego take? I’m an old man.”

“Should I put her together with Steve?” She asked me, not appreciating my joke.

I squirmed at being asked to make recommendations about a man who has a claim on my wife’s body. Kate says I can trust him, but I am constantly on guard for signs that their relationship is going beyond occasional sex.

Of course, his intentions are not the point; it is she who controls our marriage; she who can make or break it.

“Sounds a bit risky to me, she is awfully cute and has that wonderful tight young pussy and even a great personality. Are you and Steve monogamous now, do you think?”

"I don’t know; he makes it sound as if I am his only lover, but I do not know what he gets up to when we aren’t together.”

I thought to myself, What a fucked up marriage we are in, her husband asking if her lover is exclusive with her.

In the end, she invited Steve to join us for dinner that same night. He clearly found Sarah attractive and she found him interesting. When we finished eating, he and Sarah went out to the back yard to chat while we cleared the table.

But before we finished rinsing the dinner dishes and loading the dishwasher, we could hear Sarah's cries of ecstasy as he fucked her.

Without a word, Kate went to our bedroom and closed the door.

Later, Steve offered to take Sarah back to her dorm. When I climbed into bed that night, my wife was turned toward the wall. Slowly, she turned toward me and laid her head on my shoulder. She was silently crying.

I supposed I should comfort her, but I couldn’t forget all the lonely nights I have endured over the years.