I don’t know what kind of closure, if any, you experienced after this fight. That could be one reason to at least have a discussion. You will get a chance to say how you feel. What this person did sounds messed up and I’ve had the same happen to me. Do you really want to be friends with this person again? If so, forgive them and give them one ‘free pass.’ If you don’t, forgive them anyway and hang out with your new friends.