While H didn't have an affair before BD, I guarantee he was certainly interested in MG, so I, too, have those, " is he thinking about her" thoughts. will he think about her thoughts?
And since he was fooling around with me while seeing her, I would have a tough time addressing trust as well. So I would have to discuss it with him in a safe space if we were ever to date or begins new relationship.. I think that could easily destroy whatever was new.
Trust, loyalty, is the hardest thing to give back to the WAS, I think. The potential for huge amounts of hurt is so great, your heart just wants to protect itself at all costs.