Great topic, listening to people can really develop rapport. Although listening to girls is important too, it would be beneficial to you to use your wit and tease her every once in a while -- you know, keep the aura a bit flirty and sexual. I was talking to this girl today, and she said that women make a definite line between friend material and boyfriend material. If all you do is listen to her problems, you're going to get stuck into friend material for sure.