Help me with my movie date?

ok so i am in college and i met these girls last night two floors above me and my friend. They asked us too go clubbing with them but we couldn't cause we already had plans to play pong with our friends. So i met up wih one of the girls today and we had lunch and we helped eachother with our math homework. We sat on our bed doing the homework and our like knees were touching and there were definite signs of flirtation. So later tonight she is coming by to watch a movie or something so any ideas on how i should make a move?? i know shes expecting it but i don't want to be a creep about it, so any ideas??