She's my best friend and I love her, lately she's been sending some mixed signals. About two months ago we start hanging out every day and this lasts about two weeks. The next time we hang out we're sitting next to eachother and she rests her head against my chest (she has never done this before in 5 years of knowing her) so I put my arm around her shoulder, she doesn't shy away we just keep talking. Sence then she's been very physically close with me. Last week we're at a party, she's leaning in a doorway and I'm leaning on the oposit side talking to her she presses her back against my front several times before giving me a long hug and playfully stealing my fadora. An hour or so later she calls me over and sits me on the floor and gives me a back rub and that's when my lack of partying lately comes to bite me (haven't partied or drank in 3 months just haven't really had the opertunity). The problem is she has a bf and she talks about him at legnth. She's not the type of person to cheat or even do this while she's with a guy so I think she doesn't even realize she's doing this. I love this girl more than anything and this is trully confusing me so what's going on with her and what should I do