Fighting between college roommates is mostly disagreement, but both sides don't want to show weakness before fighting. Even if you can't fight, you can be friendly, but you can't show weakness. Once you show weakness, he will bully you more and look down on you. There is no need to take this matter to heart. When you come into contact with him, you should stick to your position and viewpoint in a way that treats things rather than people. So that one day when you have a chance to make up, he will respect you more.