He is a con artist, a person who will do anything to get what he wants, hence all the begging now...for another chance...to do it again. He is a sick man who cannot be trusted. As soon as he feels he can get away with it, he will cheat again.
You have a child to consider, he does not need to be exposed to a man like this one.
You said that you are an independent woman, show us, think with your head not your heart, walk away from this dive bomber. He has nothing to offer you, but, grief and heartache.