Not that it matters, but most of what follows is true.
Let me start by sketching the background to the memory I am about to share, I'm 70, and I've been married for 45 years to Kate. When we met at university in 1974, she was quite promiscuous, though not much more than a lot of the other girls we knew. She was not at all slutty. In fact she was very ladylike and quite intellectual - very much the product of an exclusive private boarding school.
But she loved sex. She had a rather masculine attitude to it, really. If a fuck was on offer she'd take it with no sense of emotional commitment. In fact before we got together she hadn't really been interested in steady boyfriends. Instead, she had a few 'friends with benefits', who fucked her regularly but were not really boyfriends, and she'd had a lot of one night stands.
That changed when we met, because we quickly formed a strong commitment to one another. But she was not inclined to give up sex with other guys, and I didn't want her to. From the outset she was very open about her sexual career, not excluding her most recent exploits, which she described with some relish and in great detail. This really turned me on. Fifty years later I still can't really explain why, but the image of her giving herself to other guys was deliriously arousing for me, and even as our relationship deepened I made sure she understood that I had no trouble at all if she wanted to continue in her promiscuous ways and take her pleasure with other guys.
Of course there were some changes. After we began to go steady she didn't sleep with as many guys as she had before we met, if only because we were sleeping together most nights. But she did still take opportunities when they arose, and they arose quite a few times. We both lived in residential colleges on campus, and there was a lot of casual sex to be had. There were a lot of good-looking boys around, and lot of those boys fucked her, including quite a few guys who I knew from around campus. She still slept with some of her old friends with benefits occasionally, and had a few one night stands as well. I guess in the first year of our relationship she'd been with about a dozen other guys overall.
A few times I enjoyed her fresh from some other guy's arms, and soon after his cock had been inside her. She came to my college bedroom, and into my bed, straight from someone's bed after he'd fucked her. She had a little phrase she used when she did this. She'd creep into my room [she had a key] and shimmy out of her clothes and climb naked into my bed, and then snuggling up to me she'd whisper in my ear 'Ive just been a very naughty girl.' And then she'd ask 'Would you like to take your turn with me now?' And I was always very eager! So, I got used to fucking her when skin smelt of another guys sweat and her pussy was full of another guy's semen. This was all before AIDS and she was always on the pill, so she never used condoms and always loved the feeling of a mans bare cock inside her hand his semen in her body. And I loved it all too.
Naturally, amidst all this we talked a bit about how hot it would be for me to watch her with another guy, but we never thought of really doing anything to make it happen, and for a long time the opportunity did not arise. Until one night, about a year after we got together...
We'd been to a big party in my college with a lot of our friends, and a few of us went back to one guy' s room afterwards to keep drinking and dancing. We both knew this guy quite well, but he was not a really close friend - and just to be clear, he was not one of the boys that Kate had been wth before. His name was Gavin. He and Kate had been dancing together at the party earlier in the evening, and I had noticed that during a few slow numbers they had snuggled and made out a bit. But I hadn't paid much attention - that kind of thing was normal enough for everyone in those days and didn't necessarily mean anything. I'd been doing the same myself with girls I'd been dancing with. We both made a point of not monopolising one another on such occasions.
When we got to Gavin's room around 1 am, he put on a tape of some music - that was the technology of the day back then! We all started to dance, and drink some more. There were about eight or nine of us to start with. He and Kate were mostly dancing with one another while I danced with another girl. Some of the songs were slow and we were all dancing close and making out a bit, including Kate and Gavin. But one by one the others drifted off to their rooms. Eventually, about an hour after we had got to Gavin's room, there were just the three of us still there - Kate, Gavin and me. As the last of the others to leave closed the door behind them, Kate was slowly swaying around the room in Gavin's arms to a slow James Taylor song. I was sitting on the floor with my back against the wall, where I'd subsided after my dance partner left. It was late, and I was pretty drowsy and ready for bed, and I was assuming that Kate was too. So I expected that when the song finished, she and I would leave too and head to my room, and my bed.