My first I got horny for a guy

This happened when i was 13 and just starting secondary school, our class went to play football in the school hall and after playing for a while we finished and went to the changing rooms. Everyone was getting undressed and putting on clothes and going out the door,some were talking and laughing. There was a guy across from me wearing red addidas nylon small shorts the ones with the white strips on the side and I was looking at this guy and looking at his shorts and got so turned on it freaked me out,didn't know what was happening,he was a good looking guy with blonde hair with a fringe,and i just wanted to touch his dick in the shorts.i kept looking at the shorts were his dick was and i wanted it so bad.god he was beautiful guy,I was not gay at that time but if he came over to me after I would have got with him. don't know if he noticed.Everybody left and went home,when I got home I could not get it out of my head so I went to my room and wanked off at least 3 times thinking of the bulge in those red shorts. I went to another class and was not in that situation again plus I really liked girls and was with women until later in life when I could not get hard around women and new I was gay.