Help me please

hello, I'm 16 years old and I just got out of a 2 year long argument with someone. the thing that bothers me is that i'm starting to have feelings for her even though i don't want to. I could never get into a relationship in my life because everyone would hate me. i know it's weird that i'm starting to have feelings for someone who really hurt me, i was wondering if anyone knew why i'm starting to have feelings for her. maybe it has to do with the fact that I experienced a lot as a child. can anyone give me advice what to do in this situation? thank you in advance