Mama Edwards will play the good wife and say she doesn’t blame him.
Yep, Mrs. Edwards may say that John has been taking good care of her during her cancer treatements, and turned to the other woman for consolation or some such nonsense. In any case, John will not be at fault. Things may come out that this other woman is a total SLUT, for example.
But since Johnny Boy is a good Democrat, he will get a pass from the MSM anyway.