Now I remember your story. I think I posted to you back then, that 100% no-contact was an absolutely necessity, and this is why. The best way to think of it is that they are ADDICTED -- addicted to their affair partner. You can't just leave an alcoholic to say "I'll only have one or two drinks, at work, but nothing more" -- it has to be 100%.
Your moment of maximum opportunity was when your husband said he wanted to work on things. Does he still??