Man my friend is so gay?

ok so I decided to believe you guys that I was just paranoid about my friend but errrrrrrr wrong! Hes spent the night saturday I have a king sized bed so he slept on the same bed under a different cover. Anyways when I wake up sunday morning he tells me "i jacked off last night." and he laughs, I'm like "dude you're freaking gay" I was seriously mad I was about to tell on him but then he sai "i wasn't thinking about you man, I was thinking about jj." freaking jj is 8 if you didn't read my last one. He's 8 and my friend is 13 and they are both dudes. I wanted to sock him. I'm starting to like jj as like a little homie no gayness, so it makes me mad when he talks about him like that joking or not. I don't think he's joking though. Anyways I tried ignoring him today at school but he kept bringing up funny memories and eventually I laughed. He's my bestfriend, I don't want him to be a perv how can I help him? Or what should I do. I'm serious I'm not a troll or whatever. I can't even sleep it's 1:37 am and I have school in 6 hours.