Blown it?! thought I wasn't interested? got a gf.. interested in me? chance/ hope?:(....?

Met a guy hit it off, great, hooked up few times, (he approached me first). Could chat easily for hrs, no prob. I take a real liking to him, then kinda ignored him! During this time, at nightclubs in big group he pinched me when walkin by. no words spoken I didn't respond. Another night I go speak 2 him feels different, he walks away, I feel rubbish. Friends have askd what's going on with us, he's a nice guy etc. Pal caught him checking me out, stands near me, seen him looking over when I wasn't aware-he knows we know, etc. Ppl have said he prob thinks I'm out his league (lol). Recently find out he has a gf (apparently less attractive). He knows I know, i'm cool. Still talk to him. He seems uneasy round me, walks off, avoids me almost, but always says hi. Kinda ignores me when we're on nightouts, but will acknowledge my friends!! Sometimes I'm too shy to say acknowledge him tho! His friends still come up to me (I don't know them!) say he's told them about me! gd/bad? ny signs jump out?