Possibility he likes me?

So there's normally like 8 of us who all go out together, and one of them I talked to hardly ever so I thought I'd start talking to him more as I was so close with the rest of them. Since then I've really started to like him and sometimes I get the feeling he may feel the same, yesterday at my friends I was like sitting on him and then later had my head on his shoulder. And he started showing me all his pictures and stuff and we had a really good time, then we walked home together in the rain as we live quite close. And he was introducing me to all his music, I dunno what to do though? Thanks to anyone who bothers to read that