Yes, he needed to see someone about his depression, but he's not going to listen to you. Just as with an addict, they have to want to go to the doctor and get help.

Your h doesn't think that there is anything wrong w/himself. Mlcers do not want us diagnosing their problems, because they don't think that there is anything wrong w/themselves. Yes, they may have an inkling that something isn't right, but the self-medication is what makes them feel better for a short period of time.

You can't help him because you didn't break him. He has to figure this out for himself and the only way is to allow him to go through this crisis and do not try to snatch him out of it or it will be worse the next time around. He has to hit bottom on his own and on his on timetable. It could be a few months from now or a year from now, but you can't help him.

Keep the focus on you.

Sit quietly, the answers will reveal themselves when you least expect them to.
The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.