As others have suggested, you are only half of the problem here. Yes, you should probably evaluate whether you're overly critical as a general rule or were overly critical of him. But the fact that he didn't express his feelings and provide you with a meaningful opporunity to change and, instead, chose to just walk out the door suggests to me that he has a lot of work to do on himself, too.

I grew up in a family where the norm was to simply cut people out and walk away, so I understand his approach more than I care to admit. It's taken a lot of work, some therapy, and the love of some very trustworthy people to break that habit.

In any event, I'm very sorry you're hurting.

Hugs,

Kate