Yeah, I get what you mean.
I’ll be straight with you.
After 14 years, this didn’t happen because you “missed one thing” or because you suddenly became a bad husband. When someone slowly checks out emotionally, it’s usually something that builds over time on both sides, not one clear mistake you can point to.
You can do everything “right” on paper (work, provide, stay loyal, help with kids) and still lose emotional connection if the relationship starts feeling routine, distant, or unspoken needs aren’t being met. And sometimes the other person also changes in a way you don’t even get to see until they’ve already moved on mentally.
The hardest part is what she said: “you’re a good man, but I’m not happy.” That usually means respect is still there, but feelings changed. And attraction/emotional connection isn’t something you can force back once she’s already emotionally attached to someone else.
Right now, trying to “fix what went wrong” with her will probably just keep you stuck in pain. The only real direction is focusing on yourself, not in a fake self-improvement way, but just rebuilding your own life and headspace after something that big.
Could it ever come back? In rare cases, maybe. But only if both people independently want it again, not through convincing or fixing.
For now, what you’re dealing with is grief, not a puzzle to solve.
If you want, tell me what the last 6–12 months looked like between you two, I’ll help you break it down properly without sugarcoating it.