DOES she like me Help?

Alright, I really like this girl i work with, we flirt and that,but had no confidence to ask her out! So i was out at the weekend and was drunk ( she new i was out ), so i sent her a messge saying fancy cinema the nxt day, she replied maby if you stop with ur cheeky antics as we joke around alot, We have talked since and she thought it was funny but chatting to her on msn i kinda asked again then had to leave before i got an answer!! what shud i do? ask again or leave it alone as i dont have a scooby if she likes me or not?