

I dated a girl after seeing her have sex with another guy
This happened in my first year at university, I was a total virgin who had never even kissed a girl. Me and some friends of mine were on a night out and by the end it was 3 of us, my flatmate, another guy I knew and me. We made it back to our student accommodation and right as the elevator was going to close a girl ran in who clearly had been drinking too, we invited her to my flat and eventually she told me and the other guy she'd fuck us both and then climbed on his lap and started making out with him right next to me. It felt so oddly good seeing that, but then she leaned over and made out with me too. Eventually we made it to my room where a threesome was supposed to happen. And the two of them started right away, he started fucking him and she tried to get me hard with her mouth but since I was drunk, a virgin and well a gooner I couldn't get hard so she eventually stopped trying and began kissing me instead while he still fucked her. It wasn't meant to be a cuckolding scenario but it essentially became one because I couldn't perform, it was humiliating but also so hot (I jerked off to the memory of it plenty of times)
But basically after that night where I got accidentally cucked, I started talking to her regularly and asked her out, we dated for a short while but it didn't last because I couldn't keep it up enough for sex so she gave up on me eventually. Throughout our relationship, I only serviced her orally and worshipped her feet a few times. It's for the best that she left me because she can now enjoy better real men.