did i do something wrong??

so i asked the guy i like to homecoming a while back since it was painfully obvious he was going to ask me (his vrienden would look at him and then at me and start giggling & one would ask "are u filming yet?" & the other would be like "yeah, i got it!", etc.) but the guy couldn't pluck up the courage to ask me (he'd get red in the face, run away before he could even walk up to me) so i decided i would ask him. even though it's a guy's choice dance i really didn't give a crap about it & you're not supposed to reject dance invitations unless u really can't go.
so when i asked him it took him a few days to respond back, and it was a rejection. over Facebook. i don't know how people reject one another (in person??? idk) & when his vrienden found out they were super pissed. they stopped talking to him & avoided him & whenever they would see me they'd give me huge pity looks, etc. (& they're not very sympathetic ppl, i'll let u know - typical populair guru group).
anyways, after that there have been other dances going on, both of which this guy tried asking me to again (even though they were girls' choice). he still couldn't make a move. he'd end up pacing in front of me, getting red in the face & running away. even his cousin tried to help him but he just ran away.
but when other girls asked him... he would go with them? like this one girl asked him to monster mash & he went with her & then this other girl asked him to winters & he's going with her... but when i asked him he flat out rejected me? & whenever he sees me in the halls & finds out that i know he's going with some other girl he gets really guilty looking (avoiding eye contact with me, looking shameful, getting red in the face).
does he even like me? i know it's hardly any facts to decipher, but i always catch him looking at me all the time & he gets super awkward/nervous when he talks to me (but sometimes he'll act like a douche). & why is he saying yes to all these other girls & didn't even give me a