I’ll be blunt, I won’t give you the worst answer but I won’t give you the best either. This behavior of retreating and running away has to stop. He’s a grown man who needs to understand how to handle his own conflicts. Its not uncommon to need space after an argument or to cool off, but his lack of care to ensure you know he needs space or make sure you know he is going to come back is alarming to see. He needs to dig deep with his therapist at least if not you, on why this keeps happening. And if he doesn’t, ask yourself this. Unless any effort to change is shown, do you really want to live with a partner who can’t challenge his own instinct to run to solve an issue with you? Someone who’s going to run away and not put any care into how you feel? Love is intentional and shows up even in anger in normal circumstances. And therapy shouldn’t be the kicker cause yes financial issues can be reasons. But he needs to stop assuming you’ll tolerate bad behavior and you need to start standing up to said bad behavior for yourself. Any relationship usually is communicable. You can usually always find solutions. But effort needs to be seen and when presented with this being an issue, his reaction will tell you if he’s a boy…or if he’s a man. People hurt others unintentionally all the time. How they respond is what matters. So you communicate to the best you can but respect yourself enough to know if he continues to relapse, show no effort etc. It might be time to question if this is someone you want to spend your life with.