Guy has his pride, at the party, if he dun talk to u, leave him
be
give him some pride 
but if it's really bothering you, then try going to talk to other
gals and together go crazy at the
dance floor, flirt with other guys 
Make him green with jealousy, then have a nice long talk to him
behind doors
Although sometimes they need some time, so best if you make friends
with his friends, so they'll include you in their conversation
That way, if he ignores u, his buddy will chat u up,
and if my calculations are correct He'll start talking to you le
