The girl I like invited me and some of our mutual friends to go out to a public pool. Me, a couple other guys, and four of her girl friends. Thing is, my crush wore a rather sexy looking bikini and was prancing around and flirting with her girl friends and some of the other guys there (not the guys that came with us). It was too much for me, I went to the bathroom, got into one of the stalls, and tried to calm myself down by jerking off, fantasizing about her in that bikini, and what I'd do after I peeled it off of her.

As luck would have it, though, a few minutes later I hear the door to the bathrooms open up and a guy (didn't recognize his voice) say they should do it here... and the voice of my crush answered back, asking if he was sure they should have a quickie there. I knew beforehand that she's sometimes hooked up for sex, but I didn't think she'd do it there. Soon enough I heard the stall next to me open up, close, and then I could only listen as this guy fucked the girl I liked right next to me, with only a thin metal wall between us. To my shame and weakness, I kept jerking off while listening to them fuck, and I came when I heard her tell him between moans to cum in her mouth. I waited a bit for them to clean up and leave before I exited. She didn't know I was in there, and I don't know who it was she hooked up with.

One of her other friends told me she went home with some other guy after we all left, though. I jerked off again that night imagining that she was getting fucked again by that guy.