This all happened a long time ago so chances are the person involved is long dead now, I was 13 and a keen swimmer and I spent a lot of time at my local Lido either with freinds or on my own, This one particular day despite it being sunny and warm not a lot of people were there so I eagerly got changed in the small changing booth into my blue swimming trunks the fashionableones for those days, I swam a length or two then became aware of being watched I looked around and there was a man in his 30's or so watching me he smiled and I smiled back and carried on swimming , Eventually he waved me over to the side of the pool where we chatted he complimented me on my swimming and my physique saying that I looked very athletic for my age, I went back to swimming feeling very flattered that a grown up thought I was that good, After a while it was time to get out dry off and go home for dinner, As I got into the changing booth the door was pushed open and the man stepped in and locked the door he told me to be quiet aggressively and pushed me up against the wall of the booth he told me to keep still "or else!" , Feeling scared I just stood there as he yanked my trunks down hard then his hands were all over me my skin still slick with water from the pool, His hands roamed from my chest and nipples to my bum cheeks and of course my dick and balls making me hard which as a hormonal teen boy wasn't hard to do is been wanking for the last year and cumming too so it was no mystery to me but being touched like this was, I started to enjoy whay he was doing as he squatted down and started to lick and suck me as he held onto my thighs my balls got sucked and licked too a thing I'd never thought about, He must have heard me moan as he chuckled to himself, He stood up dropped his trunks releasing his hard dick while not huge was nice to look at he pushed me down telling me to suck it and I did my best although it felt odd and tasted sort of nice, He was moaning and telling me what a gorgeous boy I was, Suddenly he pulled me up kissed me deeply then stood back wanking himself furiously and came shooting all over my belly and dick he told me to wank hard I did and soon came for him hard, He pulled up his trunks smiled and kissed me and said "See you gorgeous" and left quickly, I locked the door and sat on the little bench seat gathering my breath and thoughts amazed at what had happened it was all over so quickly and I thought about how I'd enjoyed what had just happened, I cleaned his cum off me with my wet trunks and got dried and dressed, As I left I looked out for the man but he wasn't there he'd long gone, I went to the Lido many times afterwards but I never saw him again and yes I was hoping I would as I wanted more of what he did to me but he never did show up again,My next guy wasn't until i was 15 but I still remember my first fondly.