What should i do and say?

My guy friend that i fancy, he knows i fancy him. And i got him on blackberry messenger, and he broad casted out to me saying "Who wants to come my party tonite :) xx" and i think it was only sent to me and no body else. But sometimes whenever i write something to him, he reads it and he ignores it and it makes me cry. And I want to go to his party, but i'm scared hes not gonna pay attention to me :/ what should i do and say, plus i soo wanna kiss him, if i do go to his party. Theres gonna be alcohol there so everyone would get really drunk.