Sorry to hear that. I don't consider ML a sign of piecing together either, W and I are starting to do that yet I see no sign of her trying to be a couple again in any other way.
As for your question, you're working on yourself because you're currently unhappy. If he won't, he can't solved his problems. It [censored], I hear ya.
Resentment occurs when we aren't doing what we need to care for ourselves, though we expect others to do it for us.
