I'm scared. What if they don't offer me a bid.

I've been hanging out with one fraternity I really like. I go to all of their events and spend time with them. It seems like majority of the guys in this fraternity like me but a couple of the guys seem like they are avoiding me. Whenever I tried to approach these guys and start conversation with them they would usually say "hey why don't you go pick something to eat from the table" or something like that and that worries me. In the other hand these couple of guys spend most of their time with sorority girls instead of rushees so that might be it. I'm still worried and I bet they won't offer me a bid.