I don’t understand when you say that you -don’t have a responsibility to see things from his perspective because you are the victim. I mean you don’t. But that still makes you a unsympathetic hurtful person that I would never want to be friends with. Just because something isn’t your job does not mean your behavior towards a fellow human isn’t cold and heartless.
This is why we have children shake hands after fights. So they grow up to be friendly, unhateful, and unresentful adults. I just think that you accidentally spread this negative mentality. You should be careful.