The hot and cold is "normal" for a betrayer.
Is both searching for validation (I still got you, you are still under my charme) and devaluating you (you want me so bad that you will do whatever for a chance to get me back in your life, I cheated you, humiliated you, and I am still the best you can get).
It's insecurity. They know they are cheats, they are the lowest of the low.
Instead of elevating them, the betrayal covered them in mud.
People see it, people contempt it.
They feel like shit, but cannot admit to their fragile ego and low self worth.
You are the perfect validation victim, they already hurt you, you loved them, so they can manipulate your pain and side to feel "I am still worth something, I am not the shit I feel when I look in the mirror or sit in silence, I will prove it she/he is still caring for me".
BEcause is when they are alone that the memory of you and their conscience will bite back.
Think of it as a "seduction" tactic. But since they broke the "healthy seduction" for the "cheater version" of it so they now use manipulation and exploitation towards you, there is "no real warmth" there, only dirt.
This is what you felt.
Follow the advise, he is not reformed at all, he wants to drag you in the mud with him to feel equal and less judged by all the people who now see him as trash.
You are not trash, stand your ground.
You deserve better.
[This message edited by BackfromtheStorm at 7:15 AM, Friday, January 23rd]