Even though my H "said" he was willing to work on "us" while the A was still lurking...IT NEVER FELT RIGHT TO ME...he never spoke the words "I LOVE YOU" or really expressed his sorrow over what he'd done until his A was REALLY over.
You are smart, your are wise, you are intuitive (heck you caught him out by just "feeling" something was up, right???)...if you HADN'T seen that crap yesterday...what was your intuition telling you for the past while???
I think we all know the answer to that...and it's a good one!