Hi Tam, I think the more you can pull back the better. I wouldn't ask him for another chance......it's he who needs to ask you for that given all circumstances!
Let him be, and let things implode with OW - in the meantime, pull right back and live your own life as if he'll not return.
If he ever does want to - well, you can consider that at that point xx
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus