feelings for a girl i had a falling out with

so there was this girl who i met in college, we became really close after a while and there was always this weird tension between us the whole time and im pretty sure she felt it too bc even another person in our friend group picked up on it.. a couple months later the whole friend group had a huge falling out bc of uni related stuff and we stopped talking bc she did some really horrible shit to my friends and i could not bring myself to forgive her for that even though at the time i think i had feelings for her. she didnt do anything bad to me directly but she has tried to hurt me academically lmao bc we were working on the same project during all of this, but i didn't really care bc it wasnt as bad as the shit she pulled with my other friends. I think shes lowkey insane. anyway all of this happend about a year ago, and since then i find myself frequently thinking about her and wanting to reach out even though i know its wrong and this falling out probably happend for a good reason. sometimes i wish i could forget all the horrible shit that happend and we could go back to being friends. i dream about her literally every week 😭 its insane that i feel all this contempt for her but still have feelings for her. should i reach out or just try to let to and forget?