Who invites a guy over when she's getting on with another guy?! That's a bit odd.
Rudey and AlphaGamDiva are right. I think that you should look for someone else. She might be in a 'one night stand' phase which could get you some action, but very short term. She seems like she needs to get her life in order before she can get involved in a relationship.
-Cream
--I'm definitely worth it!