Girl with daddy issues?

Don't take this the wrong way, but she sounds like a bit of a slut. Sleeping with men she doesn't know when she's supposed to be dating *you*? Her childhood is probably her problem for this, but now she is who she is. She seems to *want* to like you, because you're a good guy unlike the men she's been sleeping with, but she just can't seem to stay with you and not have guys she's comfortable with. Breaking up with her would be a good idea (it sounds like you're dating, anyway).