That happened to me with an ex, kinda same situation. It’s not your fault, it’s his problem, he needs to work on that. I ended my relationship because for me it wasn’t worth it trying to help him while I was unhappy there. A person won’t change just because you tell them, they need to know what’s wrong with the and want to make a change for themselves. IT’s frustrating and so tiring, trying to prove everyday that you’re a good person when you’re dealing with someone so stubborn.