HELP!!! DOES HE LIKE ME! What do U THINK!?

My Crush-In P.E. If i lose in a game he'll say "sorry Sabrina" -in a flirty way-Sabrina is me- and we talk all- the time! And we'll talked about events,tests, and a bunch of other stuff. and today he told me why he wasn't here(at school) on Friday, we'll be focused on each other when we talk, eyes to eyes and he'll make me laugh ALL THE TIME! I LIKE HIM SO---MUCH! Plus he tries to stare at me from the corner of his eyes, and i hate putting my hair up, and one day and i did(it looked good) and he was blushing and didn't make fun of me....when i was talking about the way i looked he's was all like Humming-Muttering-and smiling-(Shy-ly) cuz i guess i looked nice to him.....So...Do you think he likes me? if people say YOU LIKE HIM??!! what should i do?