Some six months ago a friend confided his enjoyment from an illicit relationship. However, he recently told me that, to keep from haram, he was going to marry a very worthy Muslim lady – muslimah – whom I regard as a good friend. Should I warn her of his dissolute past?
You are obliged to accept that your friend truly wishes to repent for having committed illicit sexual relations – zina – and that Allah will forgive his past actions. You are not permitted to tell that respected lady about his past behaviour.