Quick question when did he quit his job? I'm asking this because if the engagement got broken off during the same time that he decided to quit his job then he's not mad at you he's mad at the situation that he is in. To him it's like everything that could be bad in the world is happening to him. Maybe he's in an emotional turmoil and he doesn't know how to deal with it so he's taking it out on you. I know that doesn't help but have you heard the saying "we only get mad at the people we love"? I think that's because subconsciously we want them to console us. He may be distant and telling people things but I would say don't give up. Don't try to get him to see your point of view but rather act like nothing happened and just have casual conversations with him. He might need to know that you'll be there for him. If it helps just start off with simple hellos and just ask about his day and in the meantime do what you need to do to deal with the issues your dealing with. Your both in a situation that only you can get yourself out of. Think of this time as a reset period. I wish you all the best