I know we are all in the same pain, at different stages. Don't misunderstand. I pray and hope that you are right, that he is not happier without me, but, as others have said, sometimes it is hard to distinguish between reality and the so called mask. As humans, we start to question ourselves, blame ourselves, look for the cause.
The books everyone has suggested are very good, but knowing everything there is to know about MLC doesn't change the reality. And for all your knowledge, you don't DARE suggest to them that they are going through anything and that you understand.
If I asked my husband right now if he wanted to come home, what would he say? He's already made the remark "You wouldn't take my ass back". Plus, would we be happy? Nope. The proverbial rock and a hard place.