At sixty, Kat looked just as sexy when I married her forty years ago. I hadn't fared as well, even though she would argue the point. Kat's libido had kicked into overdrive, and I couldn't keep up with her.

Kat was tall at 5'10" with long chestnut brown hair down to her waist. Of course, her hair color came from a bottle, as her sexy triangular bush was solid white. Her ass had fallen but was still firm and plump. Her eyes were brown and bright. Her most outstanding asset was her 48DDD breasts. She had silicone added, but not to enlarge them as they were naturally large, but to firm them and keep them round.

I was 6'0" with salt and pepper curly hair. My shoulders were broad and had kept much of their firm muscle. My eyes were electric blue, and my teeth were still whiter than white. I had a nice, hard seven-inch cock with better-than-average thickness. I had a hard time getting it fully hard anymore, so sex for us was a chore, especially since she was revving up and my energy level had fallen.

Men ogled my wife as she dressed sexy and flaunted her tits. I used to love that she got the attention from men, but now I felt threatened and insecure.

Kat worked at a doctor's office as a receptionist. The office was in a large building full of many doctor offices. She usually ate in the cafeteria on the first floor at lunchtime. This was where she met and befriended Dr. Pete Sampson and his wife and partner, Dr. Sally Sampson. They were both in their forties and were sex therapists.

Kat convinced me to come in as a couple to see them and try to work out our problems. I knew she meant to find out what was wrong with me. We already knew that the ED pills did not work on me, so we both had blood tests and urine tests.

Kat was determined that she was menopausal, which was why she was always super horny. My testosterone levels were on the low side but still in the normal range. Sally was a petite redhead with a flat chest but a perfect ass. Her face was very young-looking and very pretty. Pete was a stocky, good-looking man. He appeared to be of a mixed race of maybe white and Middle Eastern descent.

They sat us down and said that on our next visit, they would try a few physical activities that may help my ED.

Sally was wearing a flowered sundress, and Pete was wearing hospital scrubs. They had me and Kat wear hospital gowns with the opening in the front. "We will demonstrate for you, the art of the prostate massage," Sally stated. To get me stimulated, she dropped her dress to the floor, exposing her naked body. On her chest, she barely had bumps for tits, but she had puffy areolas with little pink nipples. She had a fiery red bush trimmed into a large triangle. She untied Kat’s gown and slipped her gown off. What a contrast. Kat’s tits were humongous, and her bush, of course, was white. She had her husband take off his scrub bottoms and sit on the table with stirrups.

Kat gasped as his brown, flaccid cock hung down at least six inches. He had short, curly black pubes. The doctor then told me to get on the other table and put my feet in the stirrups. My bare, flaccid cock was exposed, and it was half the size of Pete’s.

Sally explained as she lubed mine and Pete's asses, "Lube your middle finger up, Kat. You are going to slip it deep into Pete's anus, palm up, and he will instruct you how to feel for and massage his prostate. I will do the same to Mac. Watch what happens to their cocks."

Kat watched Sally push her finger into my ass and feel around. Sally easily found the round mound of my prostate and rubbed her fingertip over it. It felt surprisingly good.

Kat slipped her finger into Pete's ass, palm up as instructed. She felt around until Pete told her, "Right there, feel that smooth mound." Kat nodded. "Rub your fingertip the full length of the mound with even pressure — that's it, but press a little firmer."

Pete's cock started to thicken and grow, as did mine. Sally said, "I want the guys to fondle our breasts just for added stimulation." I placed my palm over her little mound and held it there. I watched Pete fondle my wife's enormous tit as she let out a moan.

"Jesus Christ!" Kat gasped. Pete's cock was longer than nine inches and as thick as Kat's wrist.

"Look, Kat!" Sally excitedly shouted. "Mac's cock is hard and thick." Kat reluctantly took her eyes off Pete's cock and glanced at my hard-on. She started crying as she hadn't seen me fully hard in over a year.

"Now, we are going to pump their cocks to keep the blood rushing," Sally instructed. Her tiny hand circled my base and stroked me full length. I stared into her emerald green eyes as she jerked me off. I glanced over at Kat as she was panting and moaning as she gave Pete a handjob. I could see pussy juice running down Kat's thighs.

Sally took her finger out of my ass and bent over me and swallowed my entire cock into her mouth. "Glug, glug, glug, glug," was the noise her mouth and throat made as she went down on me. Kat was a little jealous that Sally was giving me oral sex. That quickly passed as Pete guided her head down and pressed his bulbous head to her lips. My cock was the biggest Kat had ever had in her mouth. When his cock stretched and filled her mouth, she shuddered and had an orgasm. Kat gagged and coughed when his fat cockhead hit the back of her mouth. She only took my cock fully in her mouth and it never went down her throat. She stroked his cock and bobbed her mouth over the remaining length. I watched as my wife came multiple times just by sucking Pete's big cock.

Sally was expertly sucking me. Her tongue swirled around my cock as her mouth moved over my shaft. I pressed her head down hard as I exploded down the doctor's throat. "Oh, fuck yeah, you got the prettiest titties," grunted Pete. He filled my wife's mouth with a massive load of cum. Like a staunch champion, she didn't lose a drop.

"Okay, this method will work maybe half the time. Go home and try it for two weeks and come back to see us," Sally instructed.

In those two weeks, I got fully hard about three times when she massaged my prostate. We had great sex those three times, but that wasn't enough for Kat.

Pete was wearing a robe in their office when we arrived. Sally said, "We have read through all our notes and have determined that Mac gets very excited when you fantasize about watching Kat having sex with another man. So, we are going to test that here today. Mac, strip and sit on the table. Kat, follow Pete's instructions."

Pete took off the robe, and his horse cock hung between his legs. Kat moaned as she saw it swaying between his legs. He stepped forward and unbuttoned Kat's blouse. A blue bra covered her enormous breasts. He unhooked her bra, and her enormous globes fell out. He bent down and sucked each long nipple as he unzipped her skirt. Kat moaned and ran her fingers through his thick black hair. Her skirt dropped to the floor, and Pete pulled her panties down and off.

Kat's sexy aroma filled the office as she was already leaking down her leg. Pete rubbed her labia and worked a finger between her lips. Both of our cocks were stiffening. Kat placed her hand around his cock as his finger sank into her pink entrance. Kat was a noisy lover, so as he finger fucked her, she loudly moaned. "I want your big cock deep in my pussy. Fuck me hard and fuck me long," she whimpered as she glanced at me unashamed.

Kat leaned forward and bit him on the shoulder as she came hard. I had mixed emotions watching another man with his fingers up my wife's pussy, making her cum.

He placed Kat on the exam table and placed her feet in the stirrups. He spread the stirrups as wide as they would go. He licked the fluids off her thigh, and she cried out, "Oh God, Mac, he’s going to eat my pussy!" My cock became fully hard.

Pete pushed his tongue deep into my wife's cunt. She threw her head back and screamed. His thumb rubbed her engorged clit as his fingers raked through her curly white bush. I could hear him lapping up her pussy juice. Her knees closed and clamped over Pete's head as she filled his mouth with more of her nectar.

Pete straightened up and pulled Kat's ass to the edge of the exam table. Kat was panting hard as she watched him place the bulbous head of his cock between her outer lips. Her legs were shaking, and her bottom lip was quivering. The head pushed through its pink entrance as her walls stretched wide. "Oh, Mac, he is so big. I want it, I want Pete's cock in my married pussy," Kat called out.

She raised her hips to take more of him. He moved forward. His fat cock slipped six inches in. "Oh God! Yes! Fuck! Mac, he feels so fucking good," she confessed. He thrust forward, and at full depth he slammed against her cervix. Kat grunted out in pain as her cervix was tender. He pulled back and fucked her in even rhythmic motions. She cried out in ecstasy. She had never been so full of cock. Her nerve endings could feel the drag of his veiny, thick cock on her inner walls.

Kat lifted her feet out of the stirrups and placed them on Pete's buttocks. Mac knew this was her wild fucking position as she could dictate the pace of her fucking. Using her feet, she guided Pete to a much faster pace so that he was pounding her deep. Her enormous tits were twirling in circles on her chest while loud skin slapping noises echoed throughout the room. Kat moaned and screamed as she was being fucked hard. She had been being fucked hard for a good fifteen minutes and had multiple orgasms. We only managed five minutes tops before I either shot my load or my cock failed to stay stiff any longer.

I don't know if I was jealous, sad, or angry that Kat was enjoying Pete so much. Sally recognized I was getting a little upset, so she climbed on the table and straddled my waist. I looked at her face, and she whispered, "Fuck me, Mac. Fuck me hard and long." Her emerald green eyes and the scattered freckles on her face and chest mesmerized me. I forgot about Kat for a moment as my hands pinched Sally's nipples and rubbed her flat chest. Her red bush tickled the head of my cock as she positioned herself over me. She sank on my shaft with ease, as she was soaking wet and used to a bigger cock. Her walls tightened around my shaft to a perfect tightness. She athletically bounced on my cock, making my cock head almost slip out of her entrance, and then plunged hard, almost taking my breath away. I stayed hard for a good ten minutes of fucking. I was so proud as Sally had two orgasms.

She leaned over and whispered in my ear, "I'm going to put you in my ass. Pete is too big for my tiny hole, but you will fit just perfectly." Sally lifted off my cock. Her cum coated my cock as she aligned me with her starfish.

Pete filled my wife's pussy with his creamy cum. Kat convulsed as she felt his warmth spread inside her. He backed away, and his big cock dropped out of her sore pussy. His cum slowly dripped out as her pussy opened and closed with each spasm. Her head turned towards me with glassy eyes. She watched as Sally sat on my cock and impaled her anus. Sally moaned loudly as she took me fully into her tight colon.

Her smooth walls of her colon gripped my cock. I was ready to explode as I glanced at Kat. She was twisting her nipples on her huge globes as she watched my cock disappear into Sally's ass. My balls tightened up and my cock thickened as my sperm shot up into Sally's poop chute.

"One more session in two weeks and I think we are done," Sally announced as we all got dressed.

Of course, Kat and I were not brave enough to have a stranger come and fuck her as I watched. So we arrived at the session hoping to find another solution.

The doctor had us completely strip. Sally produced a syringe with 1ml of clear solution. She explained that penile injection works 99% of the time as long as the penis is receiving blood flow. She showed Kat how and where to inject me. Kat took the syringe and poked me at the base of my cock. It only stung for a second as the needle was of a tiny gauge. My cock started growing in about five minutes. Kat watched in amazement as my cock grew longer and thicker than it had ever been. Kat lay on her back and spread her legs. I leaned in and licked her asshole. She squirmed and squealed with delight. That was my first taste and feel of ass on my tongue. It was strangely musty, but felt really erotic. I licked her butthole a few more times as she moaned.

I raised her legs high in the air and spread lube on the head of my purple head. The tip of my cock penetrated Kat's ass for the first time in ten years. She was moaning in anticipation. My cock had not been hard enough to push through her sphincter until now. I pushed with my hips, and my shaft slid down her smooth walls. I watched as cum seeped out of Kat's pussy. Her eyes were closed, enjoying the feel of my cock once again in her ass.

I fucked her ass slowly, just like she wanted. She relished the feel of my shaft sliding up and down her soft, smooth walls. My cum filled her bowels as I exploded inside her. "Eat my pussy, Mac! Make me cum all over your face," she pleaded.

My still hard cock popped out of her ass, and I leaned in and tongued her outer lips. Kat pulled my hair, trying to get me to lick deeper. My tongue scooped out her nectar as my nose nestled into her white bush. I licked up her slit until my mouth covered her engorged clit. I sucked, licked, and bit her sensitive button as her moans filled the room. Her thighs squeezed my head as she came hard again.

I kissed my way up her flat stomach until I reached her globes. I marked my wife's breast with teeth marks as I aligned my cock with her soaking wet entrance. Kat put her heels on my ass and tried to pull me in. I held steady with just my head inside her. She had desperation in her eyes as her pussy hungered for my cock.

"Please, Mac! Give me your cock. I need it. Fuck me. Slide your shaft into my cunt," Kat pleaded. I thrust my spear into my wife's pussy with such force that she opened her mouth and let out a silent scream. I fucked my wife like she was the last whore on earth. Our skin slapped together, and we both grunted as I ravaged her pussy. We fucked like wild animals for over ten minutes when she let out a shriek. Her entire body convulsed, and she squirted for the first time since she was in her twenties.

My cock stayed harder than ever, and I was breathing heavily. My cock may have rejuvenated, but I was still in my sixties. I pulled out and stood Kat up. I pressed her large breasts hard into the cushion by bending her over the exam table.

My hands spread her cheeks, and I marveled at the white fuzz covering her labia. I slipped my cock into my wife's pussy from behind. It had been many years since I fucked Kat from behind. Her pussy felt much tighter in this position, and I had to be very hard to fuck her this way.

My hands gripped her fleshy hips, and I deep fucked her from behind. "Oh, oh, oh, oh, yes, yes, yes, umf, umf, umf," she grunted. I felt her pussy spasm, and she let out a long, sexy moan as she climaxed. Her pussy tightened around my cock. The feeling of my cum rushing through my cock and erupting inside my wife was almost overwhelming. I grunted so loudly that it startled the observing doctors.

So, it's been ten years since that first injection. Kat and I are both in our seventies. We fuck at least four times a week, and I share her from time to time with men we meet on vacation. I love to watch her get fucked by younger men with huge cocks. Kat also enjoys fucking strange men. Once, when we were in South Africa, I watched her get gang-banged by three young men in their twenties.

Kat occasionally has me fuck her widowed friends who are sex starved and lonely. We have a grand lifestyle and hope to continue it for years to come.