First of all, let me clarify something - this man is NOT a christian. His very acts show that his words are empty air. That he wears the title of christian minister is irrelevant to the fact he is NOT a christian.
Dredging up old memories - Do you remember the verse (in Revelations I think) where the damned cry 'but did we not call Lord, Lord, and do great works in your name?' and the lord replied 'but you did not know me'. (that's going from memory - it's been 2 decades or more since I read that verse)
Secondly, you need to understand the type of man he is, who can degrade you to other women in order to sleep with them, then return and sweettalk you...and how practiced did both of those conversations sound? It is practiced deceit, and he's very practiced at it.
We're all entitled to our faults - none of us is perfect, but this isn't a 'slip of the tongue', or a momentary weakness...it is an ongoing, purposeful course of practiced deceit.
Combined with his cheating ways, it is to my way of thinking, an irreedeemable feature. I'd suggest leaving.