But how do you 'fight' infidelity when your spouse has fessed up and told you the truth before you even guessed an A was happening, moved out of the family home immediately, is telling you and everyone else that you are separated (which, in their opinion, gives them full license to do what they want and explore/build the other relationship), and that D is the next inevitable step.
You let the cheating spouse know, and others as well (exposure), that since you are STILL MARRIED, you consider this ADULTERY, and you have NOT given him "full license" to cheat, and that if he chooses to do that, he's a grown man and you can't control him, but you have decided to protect yourself and move on.
And then you protect yourself and move on.
If possible, I would, with my exposure, include evidence that your husband's affair started BEFORE he was separated from you.
Basically, he's trying to "normalize" and "justify" his behavior. You need to maintain your own boundaries that this is NOT normal or acceptable, and widen the circle of who knows, as Allen has suggested.
