Boys will be boys especially in their early teens.
When I was in my early teens I had a clubhouse in my back yard. Buddies from the neighborhood got together to play cards and talk about sex. None of us had any sex with a girl but we were all experienced at jacking off. We had a collection of 'dirty magazines' which we all enjoyed looking at. If every I got horny, I would take the short trip to relieve myself while looking at my favorite girlie photos. The clubhouse was also the place where we would have circle jerks. They were always contests on who could cum first, shoot the most, cum the most times, or shoot the farthest. I few times we even ventured into giving each other hand jobs. One guy was especially good at it and was always asked for his services. On rare occassions blow jobs were traded. I haven't had a cock in my mouth since those early days but I must admit I sometimes yearn for a dick to harden in my mouth. I even attempted to suck myself off, but my effort only was able to get the very tip to my lips. I am married and I have a dildo which is the closest - I've come to get the feeling of a cock in my mouth.