Bar, I say the the A won't last because by definition, it is an R between 2 damaged people. Your H is a Husband and father who is winningly committing adultery and the OW is a Woman who is after a man who is married and has children. Not a recipe for a lasting R.
M35 W37 S9 D6 M12 yrs Know 15 yrs Bomb 1/28/07 My Sitch Failure is the opportunity to start again more intelligently - Henry Ford