It may seem like your H will go out, remarry and "be happy" but honestly, as long as he's still screwed up inside w/himself (and it is very clear by his actions that he's a complete mess psychologically), he'll never be able to be truly happy. Something will always hold him back.
So, part of your karma is that right there - your H may seem happy, but he'll never get to truly know love and what it can do. He won't be able to sustain the lie he lives in as it will eventually eat him up.
Also, they say "a tiger never changes its stripes" so do you really think he'll change and become a "model husband" all of a sudden? I don't.
Finally, if he does find himself and get to a place where he can understand his own issues and learn to embrace them, he'll be forever filled w/guilt over losing his family that he'll never be able to be completely happy.
There is very little realistic chance your H will ever be "truly happy" b/c he has way too much baggage. He'll put on a good front and trudge along, but you should know that he's simply just being what he's shown himself to be w/you - a complete fake and a sham.
Don't worry about his happiness (I can't see it coming his way). Instead, as John said, "screw him" and live your life.
Every second spent on him is time robbed from you and your kids. He's not worth it. Your time is too valuable to throw it away on something so meaningless as wondering about H.
