... puzzle for you. Even though anon4now broke up with M, should he have also told his wife about the affair after the fact? If he didn't, could his wife give bonafide consent to staying married with him when she was deprived of that rather significant information? Shouldn't she know that she is choosing to stay married with a man who has a history of cheating on her?
This isn't meant to be a harsh or snarky remark; it is an honest ethical challenge and I for one don't know the right answer.