I used to make fun of a girl who liked me a lot... Now after three years she hates me but I love her

Just give her time she probably remembers how you treated her so it might take her a while for her to come to grips with this. Probably confused about it saying this guy really did me dirt so i'm not understanding this at all.

Alright I had a simuler situation I had the same situation and I made fun of a girl but were cool now cause we hang out a lot go over each others house and chill. tell her how you feel, how sorry you are ask for forgiveness as corny as it sounds it will clear it up between you two