I am not sure if he likes me?

Kso, there is a boy in my class. He sits behind me and he will sometimes whisper something funny into my ear and when I sit in my other seat I ALWAYS catch him looking at me. I don't look at him often. Only when he has been looking at me for awhile. And, sometimes he will look away fast. But, if I smile at him he will smile back. He teases me allot too. Like, one day in science I burned a whole in my new shirt, I said I was going to throw it out and he asked why and I said that the wholes bothered me. Now sometimes when I say something he will be like "does that bother you" with a smile. But, I am not really sure if this means he likes me. I am pretty confused. Help? Thanks in advance.