So some backstory:

I met this girl, well call her julia, through a mutual friend. At this point i should mention we are both 19 and dorm at our college, both of us are hours from home. We really hit it off and quickly became close friends. Since i play guitar and she has a great voice we would really often get together and play some music, mean while i think shes super hot but i know she has a BF so i never made any moves.

From the start she would complain about how much she hates her BF, and how shes only with him because she needs a place to live when she goes back to her home town during breaks and he supports her financially. She had a rough childhood and her mom kicked her out of the house. Anyway, shed always come to me for advice and what she should do, because she says her bf is a dick and shes tired of him. then one night we drank a bit with some friends and she didnt want to go back to her dorm, so i offered to let her take my bed and id take the couch. She then said she wanted to be close to me so we ended up in my bed together. We didnt have sex, but rather just talked for hours and hours before sleeping. After that however, sexual tension started becoming an issue, and we both werent shy to make it clear that it was there.

Now we are heavily contemplating sex. AITA if i end up having sex with her?