I once lived as a cuckold, although at the time I didn't know the term.

As a young couple we were very kinky and experimental. It started (I think) with my brother and I discussing sex with our respective partners and moved onto talking about 'wife' swaps. One VERY VERY drunken night out the four of us were drinking in some city centre pubs. When the girls went off to the toilets together, we sort of gave each other knowing looks and nods. As the evening progressed we got very drunk before heading home. His girlfriend being the most drunk quickly slunk off to bed and things began to progressed along previously discussed lines. When we all retired to the bedrooms I attempted to wake his girlfriend, unfortunately, she was much too drunk and could not be roused. So I returned to my brother and my girlfriend in the double room where I found him propped against the headboard with her kneeling beside him, sucking him off. I got into the bed next to him and she preceded to perform oral on both of us as we sat next to each. I’d barely had a few seconds of her mouth wrapped around me when she then stopped sucking us and moved over to mount him whilst I continued wanking beside them. I felt my first jealous pang, I had been though in the other room trying to rouse his girlfriend into some sexual fun for at least fifteen minutes all the time he’d been getting head from my girlfriend. I continued to watch and wank. As he slid into her, she kissed him passionately and I felt my jealousy surge higher as their tongues intertwined and his hips began to rhythmically push into her. 

Could I go through with this? 

Should I call a halt now?

Could I call a halt?

Had it already gone too far?

Moments later the jealous feeling were doused as she turned to begin kissing me just as passionately. As we kissed I could feel his thrusts as her lips pressed to mine. She held my head and my arms were around her neck as we kissed. Moans began to come from her lips and the urgency left her kisses. Her hands slipped from my head and she turned back and began to kiss my brother once more. I lay there watching and walking as my brother plowed my girlfriend embraced in a continual kiss. Jealousy surged once more inside me and I turned to kneel on the edge of the bed still furiously pulling my cock. As I looked for ways to get involved I remember feeling a little left out, but they were doing nothing we hadn’t planned. It was me who was the interloper. I briefly considered calling it a night and going next door but couldn’t leave her alone with him. I moved behind them and straddled my brothers shins, moving in to penetrate her ass. She stopped kissing him and pulled away momentarily hissing “Wait”. My brother shifted down the bed to a full lying position and my girlfriend remounted him lower down. Her hips had now rotated and now offered me a better angle to enter her from behind. She once again moved forward and began to kiss him deeply as my brother resumed his rhythmic pounding of my girlfriends pussy. I leaned forward and pushed into her ass. We both began to fuck her with varying strokes both together, one in one out etc etc. She loved it and as I leaned forward and cupped her breasts around her, she turned to kiss me deeply too. My worst fears ebbed away. It was fantastic sex and we both came deep inside her. I don't remember if I came first or he did but everyone was satisfied. I remember falling asleep and waking up next to her. What, if anything, happened after I'd fallen to sleep I do not know, but the next morning I was in the double bed with my girlfriend and my brother was in the next room alone, his girlfriend asleep in the third bedroom. I quizzed her about how it was for her and she confessed she had loved the double penetration part and said she was sorry I had not had the opportunity to fuck my brothers girlfriend. I asked how he compared to me and she avoided the question saying we were about the same. I kept probing her and eventually she confessed that he was thicker… but I was longer. Hmmmm.

The next time we went out, it was just the three of us, my brother, my girlfriend and I. I was up for another threesome as we had has so much fun the last time. So when she went to the loo we passed knowing looks to each other and it was agreed. Through the evening, on one or two occasions, a comment was passed that I was not drinking as fast as they were, but I seemed to be far more drunk than them.

At closing time we returned home and all went into the spare room, we were in the spare room as my parents were back home and in their room (The one we had used previously) and I had officially moved out. The ‘music’ room had a double sofa bed in it for guest use. Things got a little awkward at that point and no one really knew how to start it. I was unbelievably drunk and assumed they were also. I suggested that we’d all better get to sleep and slouched on the bed propped up against the couch part. My girlfriend sitting on the couch bit of the folding bed next to me, with her short skirt around her thighs. I didn’t notice it at the time, but her knees were pointing towards where my brother who was kneeling at the bottom of the bed. No one moved as if waiting for something to happen, within a few moments my eyes began to droop and I shuffled further down the mattress and I fell fast asleep. 

I woke some minutes later on my side facing away from where my girlfriend had been sitting on the couch. As I roused and murmured, what ever noises had stirred me and I hadn’t fully registered, stopped. I rolled over my eyes goggling in all directions, unable bring the separate images together and into focus. I remember saying, “What’s going on” as my head fell back to the pillow now facing towards them. My girlfriend say something like, “Nothing, your drunk and fell asleep. Go back to sleep.” What I saw as my eyes began to co-operate, was my girlfriend sitting on the edge of the couch with my brother kneeling between her thighs. Her skirt was hitched up around her waist and her biker style low cut revealing top was unzipped and held open by my brothers hands on her breasts. I couldn’t see his cock buried inside her, but the fact his jeans and pants were down around his thighs and her arms and legs were wrapped around him, told me that he was. My head flopped down onto the pillow and I let out a snuffle closing my eyes almost completely. I lay there drunk and shocked nearly conscious computing what I had seen. A threesome was one thing, but this was cheating. I heard him say “That was close, I think I should go” and she replied “Its ok he’s gone back to sleep.” Then I watched through slitted eyes and heard the rhythmic sound of the couch as his hairy arse began to gyrate pushing himself into her.

The next time I came too, still cant have been too much later, I saw she had laid back on the couch and her legs were high in the air with her heels pointing to the ceiling. His face was pressed on hers and was held their with one of her fists clenched in his short hair. Her other hand was pressed onto his back holding him on top of her. His legs were ram-rod straight and he rested his weight on his hands, pressed into the couch, and his chest pressed onto her lovely breasts that spilled out sideways, as he repeatedly raised his hips and pounded them into her. The next morning I woke next to my girlfriend. I was still dressed, but she was completely naked.

Over the next weeks my girlfriend and I returned to where I was at university and she commuted down to work. We often talked about our erotic fantasies and the night of the threesome, but I never mentioned her cheating on me and nor did she. I was still incredibly turned on by the thought of her fucking someone else, but also very jealous. I cant describe my feelings in full, but I found it just so erotic to think of another mans cock pounding into her. Crazy.

The next time my brother came to stay with us, he asked me directly when my girlfriend had left the room "Do you want to do another threesome?". I was a little shocked and taken aback and made some none committal comment like, “It was a little awkward last time we tried” Not letting on that I’d, intermittently watched them fucking like rabbits whilst they thought I was passed out drunk.

He replied “Yeah, you were pretty waisted and I didn’t really know how to start things.” She came back into the kitchen and we sat down to eat and drink. Nothing too heavy, just a couple of beers. The evening went swiftly and we all piled up to bed. I was ready to try for another threesome, but my brother went straight to his room calling “Night” So my girlfriend and I went into our room and got into bed. As we lay there, me with a raging hard-on I managed to persuade my girlfriend onto her side and slid into her. I whispered my erotic fantasies in her ear asking if she wanted to go next door and fuck him. She kept telling me that she’d had a great time, but she didn’t fancy him, it was a one off and didn’t want a repeat. But I didn’t give up. 

“Don’t you want another cock in you?”

“Don’t you want to go next door and fuck him?”

“I would love to share you with him”

On and on I whispered to her. All the time she rebuffed my suggestions. Rather than dampening my arousal, I was having too much of a fantasy trip for that, I approached my own orgasm. She could feel my growing orgasm and just as I was about to to cum, she pulled away and stood up leaving my wet cock bobbing on the bedsheet. 

“Where are you going?" I asked, hardly daring to believe and at the same time my heart sinking at the thought of her fucking him (Again). 

“I'm going to fuck him. That’s what you want?” she hissed at me. 

“Um, it was just a fantasy. Get back into bed.” I replied. 

Without another word she turned walked out of our bedroom completely naked closing the door behind her. I thought ‘She’s just punishing me for nagging her, she’d gone downstairs and will be back when she’s cooled off’ Then I heard the bed next door squeak. within a couple of minutes I could hear the rhythmic squeaking from the bed and moans coming from her as my brother, once more, pounded my girlfriend. I was shocked. I couldn’t believe she’d gone through with it. Her moans escalated as she approached her orgasm and ended with a loud groan. I had though that was it and he’d have finished too, but the squeaking continued. I was shocked and wide awake now. I gingerly climbed out of bed and opened our bedroom door. I stepped out into the hallway edging along it to peep through their open door. As she came into view I could see her on top of him, back to the door with her her blonde hair trailing down her back and her hand on his chest whilst his hands caressed her breasts. He was now thrusting up into her and as I watched she began matching his thrusts, bouncing up and down on him. As the tempo increased the moaning resumed. It ended once again with a loud groan from her. She was spent and flopped down onto him and began kissing him passionately. My heart sank into my feet. Jealousy surged inside me. What the hell was wrong with me? Half an hour ago I was  begging her to do this and now I felt sick. As she lay there kissing him I saw his hips begin to gyrate once more. She groaned, clearly spent and not yet ready for any more. He tried to push her back up to sitting on him so she could ride him again, but she resisted and continued to kiss him. That was when the bed groaned and he flipped her onto her back and drove his cock into her. In this position they were face to face with his chest pressing on her breasts. They were kissing again, passionately. From my vantage point I could see his balls slapping her as pistoned in and out of her. At least I thought I could. I may just have a very sick and twisted imagination. I watched as he gathered pace fucking my girlfriend to yet another orgasm. When she pushed him away to breath and pant, he hooked is right arm under her knee and moved it to the crook of his arm and then up onto his shoulder. He followed suit with his left arm and placed his hands under her buttocks to lift her off the bed. Her ankles locked behind his neck and he began once more to plow her. I couldn’t watch any longer. I slunk back to our room and pushed the door to not latching it. I heard her reach a third orgasm closely followed by a deep groan from him. I imagined him arching his back, his cock buried balls deep in my girlfriend as he pumped his cum deep inside her. In the position I had left them she was so exposed and I was certain he was as deep as any man had ever been inside her. After a minute or so I heard more bed squeaks and I assumed she was returning to me. But the squeaking settled and then silence. 

I fell asleep, alone tormented and confused. The next morning I woke to the rhythmic squeaking of the bed in the next room again. I didn’t want to watch, I didn’t want to listen, I didn’t want to know. But he went on and on for at least half an hour. I heard my girlfriend reach orgasm another two times before I heard the distinctive groan of my brother pouring more cum into my girlfriend. A few minutes later I heard the bed squeaking agin and whispered words. I rolled away from the door and closed my eyes. I heard our bedroom door open then close, fully this time. My bed sagged and I felt her hot body press up against mine. 

I moaned a little pretending that I’d just woken and she whispered “Its still early, go back to sleep.”

I lay there wide awake as my girlfriend cuddled up to me. 

She smelled of sex. 

She smelled of him. 

I was a cuckold.