Do I Like Him? Or is he just a good friend?

I think I have a crush on a boy I go to school with. He's really nice and likes all the things I like. I told all my friends I had a crush on him, except for him, of course, but I don't stutter or blush and my heart doesn't beat faster when i'm near him. However, when i walk around a corner in the halls, i want him to be on the other side, just so that I can say hi. I get jealous and play my ipod really loud whenever he talks to the girl that i know he likes so that i cant hear them. I think I like him, but is it just hormones??