A part of me says yes this is what I want to do because I don't know if I can trust again after a PA and all the deception.
I know I should have patience...but in the 8 weeks of separation things have only become worse and more involved with this OW and she is married too. He says they are supposedly done dating for now, but he never knows what the future holds with them.
You should read "Not Just friends". There is a case study in there of EXACTLY this sort of situation. Two married people having an EA/affair.
It will give you some good insight, and help you plan your strategy more.
