Does this boy like me?

There is this boy in my year who is quite popular (more than me) and in cles he keeps looking at me and smiling and pulling funni faces to try and get me 2 laugh and it works. but the only thing is he as a girlfriend but that was after this started do yhuu think he is tryin 2 make me jelous or just isnt interested in me. he also doesnt normally talk 2 me and he has been makin conversation and we were in english and i was by my mate n he was sittin next t her (he has 2) n wen i was told 2 move he was sayin like cant she just stay there n stuff also his mates wud make fun of himm if he went out with me and i never really liked him as a mate or anythin else i hardly liked him at all but now i kind of like him also my mate was sayin 2 me the other daii that she thinks he likes me but i was tryin 2 deny it but hopin it was true. also my mates dont like him and was sayin errr huu wud go out wid him but i really like hm they also did that wid my ex . wot do i do plz help i am in a dilemma