The good him is the fake bit, he only uses the hooks you need him to to keep him in there. Your job is to make him feel all powerful and mighty through his systematic erosion and destruction of you.
He will never change - unless you count getting worse as change.
Get him out of what’s left of your life, understand that your safety and security is at high risk, and people exactly like him can hurt, maim and kill, and do.
Look at the recent reports about the 8 stages of abuse. It’s bang on the money.
I say this as a former abuse sufferer, and someone who has worked in charities to help other abuse victims.
I lost 10 years of my life to that prick, I saddled the best son in the world with a useless abuser as a father - hate myself for that!
However... life goes on. I can’t tell you how much my life has improved, yours can too, but you have to take a deep breath, get rid of this awful man and not stop until he’s history.
If he stalks you, call the police, if he contacts you at all, no acknowledgement at all, tell anyone who tries to contact you on his behalf that they have had their one chance and mention his name again and they too will be out of your life
Don’t spare anyone in this, no matter who. Narcs find us because we’re conditioned to accept abuse. So you may find your ex enlists your family members to get you back to him, they get banished too - be ruthless
Your very existence is at risk here! Take this seriously
(((Hug)))