Why would my husband join the same Facebook groups as the woman he had an affair with? [after cutting contact]?

[Tricia G]

Here's what you wrote: At new year 2010, he met her to tell her he does not hate her BUT that she's wrecked any chance that they "might have ended up together" or at least friends. I know she was devastated. He said he might well have left me for her, otherwise but he "just can't trust" her anymore.

You are a fool if in all honesty you believe that he dedicated himself to you. He may have gone through the motions for a short while, but just a few short months ago, he resumed his inappropriate obsession with her.

And it is an inappropriate obsession. As in it is creepy and and he needs some significant professional help. If I were you, I would cut my losses. He cheated, he wants to cheat again. And he may end up being charged criminally as his obsession with her gets even more creepy.