I did this at school with a guy, it was hot when it happened but turned out to be a mistake. He had a gf & was apparently "straight", but after I wanked him off he wouldn't leave me alone, he became somewhat obsessed.
to Big_Bad_Daddy :Isn't that what happens with all guys tho, especially the "straight" ones. You wank or suck them off one time and they always come back, over and over again lol