Does he like me... or not?

This guy named Timmy lives down the road from me. He ride my bus, sits right next to me in English class. He always jokes with me. One time he even played some sort of peek-a-boo with with. every time he looked at me i looked at him then he looked away. He talks to me at least three times a day. He smiles at me when he see me sometimes. But the problem is... he has a girlfriend. Who is some what my friend. He sends me all of these mixed signals. It's like he wants me to be confused. I really like him. I've known him for a long time now considering he lives down the road from me. I think i'm in love with him... help:(