So you’ve ended on bad terms, before you were in a relationship you must have been good friends. Even if you don’t get back in a relationship you could still be friends. You don’t want to lose everything. Fighting with each other will get you no where and leave you both feeling upset, hurt and annoyed, and that’s not good for anyone. You’ll find yourself fighting over stupid stuff about what he didn’t do right 4 months ago. Is there any point? Concentrate on what’s happening now.