I was in a Church choir as a boy and the head chorister (let's call him Allan) had, literally the voice of an angel. I can't say I fancied him, but I did admire him.
One day we decided to go to the cinema. When we got there, he spread his coat over his knees and I did the same. The lights dimmed and we got into the film. Then I felt his hand touching my leg and moving over to my crotch. I felt him fumbling with my zip and then he had my cock out and was jacking me in long slow movements. I was only 13 at the time and knew that I would cum really quickly. This was also the first time anyone other than me had touched my cock. I tensed up as I felt the inevitable orgasm approaching and then I was cumming onto the inside of my coat. (Yuck!) Allan smiled and settled back. I reached across and under HIS coat. He was hard as a rock and already had his cock out. I wrapped my fingers around him and returned the favour. I felt him spurt and got it all over my hand.
This led, on different occasions, to a lot of experimenting between us. Neither of us was or is gay. It was just some juvenile experimenting but I loved every minute of it.