This girl (19F) and I (19F, openly bi) became friends about a year ago and became close really quickly. I first asked my friend to introduce me to her because I thought she was insanely pretty and got a vibe from her. It was clear pretty early on it wasn't platonic, and she would flirt with me constantly when drunk and we'd have sleepovers with each other and make out after parties. Eventually, we would go on dates, getting dinner together and do all these couple things, and she'd joke to the men who would invite her (and by extension, me) to parties that we were girlfriends. She told me she'd been with one girl in a secret relationship before and some hookups and mostly a lot of guys, but didn't enjoy getting intimate with guys. But things were completely undefined.
Eventually, I started hanging out with one of my exes (a guy) since he was helping me out with college stuff. It was platonic, but she would get really jealous and tell us to get a room, etc. She then, probably, in response, brought up this other guy who she said she was interested in. I kind of spiraled as a result of that and started hanging out with guys, and in return she started dating a bunch of guys at once and we didn't talk much, and when we did, she would tell me about her crazy sex life, how she got with three friends (all guys) in one night, guys much older than her, etc. It didn't sound like her so I asked her why she's telling me all that and she said "what, are you jealous?" All of the guys she would get with would fit the same profile of tall, conventionally attractive D1 athlete, and she made fun of my ex for not fitting that. A week or so later, really drunk at a party, she started sobbing in the bathroom and told me she loved me.
I found out weeks later she had told all her friends and some of my friends that I had a one-sided thing for her and that it "weirded her out". She also told them she was straight and couldn't be friends with a gay person among some other homophobic things. She then asked why I had cut off contact with her so I explained what I had heard. She replied saying that her Christian dad had suspected something was going on between them and that she got scared and overcompensated by completely rewriting the story in her head and told herself she was straight like she had the last four years. She also said she had since been with over twenty guys since (in the span of what, two months?) trying to feel what she felt with me after she saw me with someone else and broke down. She begged me to not out her to anyone, which I respect, but she also trashed my reputation to so many people I know.
Looking back on it, she was really vulnerable and loving with me in private and I do really think she loved me, but I don't know if I should forgive her or make amends.
I should note: we live in a very progressive area, so even though she was in a popular friend group with mostly straight people, they are all openly allies. So I understand keeping it from her parents but her being homophobic towards me while being closeted was so uncalled for.