There's this girl in one of my classes, we study sometimes together, and she came over to my place before. Feels like I've known her forever. A month or two ago she came over to study, on a Friday, and we drank as well( I know). Made a move, and she told me she has a boyfriend. Thing is, she flirts with me heaaavy. She's like we can just be friends, told her I already have enough friends. She got kinda blown and left. In the meantime we've been studying a lil, but I just withdrew interest. She also invited me to study at hers with a bottle of wine.

Last night we met up to study(library) and she was heavy heavy flirting with me, lots of contact. She showed me some pics of her that were pretty risqué. Then was about to show me a pic of her nude butt, but decided against it. She told me she wanted a massage. I told her she has a bf for that. She got blown again. When we left she's trying to get me to walk her to her car, I didnt(for whatever fucking reason) and I'm like "cya". I normally ignore her signals because I know she already told me she has a bf. I don't normally ask these sorts of basic questions, but I feel this weird oneitis connection to her which takes me out of my element. Was I oblivious? How can I proceed now?

Tl;Dr girl with bf is super into me, shows me risqué pics, and touches me all the time(thigh, everywhere) , but rejected me before. Did I fuck up my chances? How to proceed.

Edit: also how to meet up if we have only studied together? Class is ending soon, so I'm not sure how to see her after that, since studying is like my only reason to meet up with her now

Edit2: we don't study together much. Maybe once every few weeks, only for projects and exams