So I'm at college and I've been with my boyfriend a year. We came to the same college from our home town so it's pretty devastating what I've done to him as I know he loves me.
We were at a party last week and we started playing some spin the bottle. It started out fairly sexual and just got worse and worse. Eventually it landed on me and one of my drunk friends dared me in my fairly tipsy state to give this guy she knew I fancied a blowjob. I don't think people expected it to happen but the guy was unfortunately a total confident player who just confidently stood up walked over to me, and took my hand to lead me to another room. Without really thinking, I just took his hand and stood up. I turned to look at my boyfriend expecting him to say something. If he'd said anything, I'd have stopped. But he just looked like a rabbit caught in headlights. There was a quiet throughout the room with a few whistles and gasps as we left the room.
We were gone about ten minutes, during which I did my dare. But I didn't just do it- I enjoyed it. His dick was big and had a large vein on the left. And when he had his orgasm, I actually swallowed it all- something I had never done for my boyfriend.
The looks and cheers as we returned were unbearable. My boyfriend wasn't making eye contact with me. Just before I sat down, one guy shouted out "now kiss your boyfriend!". Eventually everyone started chanting "do it, do it, do it..." and I found myself walking slowly over to my boyfriend and kneeling in front of him sat on the floor. I took his face in my hands and slowly made out with him to cheers and whoops from everyone. I didn't realise it, but I'd already lost almost all respect for him by this point.
As the evening started getting more obviously sexual for everyone, my blowjob guy came and took me upstairs to a bedroom. Not a word of protest from my boyfriend as we went upstairs to have sex.
He got me naked and played with my tits for a while and fingered me before laying me down and slowly working his huge penis inside me. I was cheating on my boyfriend downstairs and I was loving it. His dick felt so much larger inside me than my boyfriend's.
After being fucked for about half an hour and me cumming three times, I heard the door slowly open and saw my obviously distraught boyfriend come in. He just stood there, until my guy told him to close the door and sit in the corner and be silent. He actually did it.
We were under the covers so my boyfriend couldn't explicitly see my guy's large dick going in and out of his girlfriend's pussy but he could hear it, as well as my soft moans as I forgot he was there. My guy alternated between fucking me hard and slowly, with us kissing as well. He eventually picked up the pace, obviously cumming himself, and I felt his jizz spurt deep inside me. When he finished cumming he told my boyfriend to get out as we wanted to be alone.
I'd never felt so satisfied or dazed.
I broke up with my boyfriend yesterday.