Nikki - here's the deal in your sitch. Your H's conscious, rational mind can see what the OW is. BUT - he's bummed at giving her up because he has to give up the dopamine rush he was getting from the flirtation (or affair, or whatever it was). Sometimes that dopamine withdrawal is too much for them, and they have to go back to get their "fix" (read through fixzzle's old threads on Piecing - the oW in her case was a similar type of predator).
SO...my point in all this being, you have to help your H get that dopamine rush from YOU. You need to start pulling some 180's, surprising him, keeping him guessing - make it so he'll WANT to rush home, just to see what you'll surprise him with next. New clothes, new haircut, rearranged furniture, new undies, whatever ... guys seek novelty, and H doesn't want to climb back into the same old rut - so let him see he can go in a new direction WITH you.
