I’ve never been engaged, never mind married, however, I’ve read enough stories about divorce on the internet to think that there are many people who don’t truly appreciate their partner, and then, blame them for their (sudden?) unhappiness because they cannot/don’t want to be honest with them for some reason. It’s just strange how so many of them, like your ex husband, say they haven’t been happy for years. It’s usually news to their spouse, too.
I obviously can’t truly relate to your experience, I’ll admit, but it’s heartening to read how you’ve progressed in the past year.