Somebody who felt comfortable that you'd never leave.
Now you've called their bluff and laid your cards down, what hand do you have?

People who are psychologically unwell and also abusive. They want to keep you around to control you and abuse you. And get whatever they were gaining. They will only act worse after. They aren’t sorry for what they did. They are sorry for the loss that was their gain. For their own personal use.

The type I'd leaving standing with no second chances.

This might help:

https://www.medicinenet.com/what_does_being_hoovered_mean/article.htm#:~:text=1%2F1-,To%20be%20hoovered,is%20seeking%20to%20move%20away.

Abusive, leave them, they’ll never change.

Bipolar.

they maybe realise they where wrong abusing and cussing you . if this is a long term issue whether you walk or stay and give him another chance is your call [witchthatwantsfun]

Well my abuser was a narcissist but this kind of behavior isn't limited to personality disorders.

Borderline?
Someone with dependent personality disorder?

Sounds like a narcissist they can't bare the thought of losing their supply even if they have multiple partners

Abuser

Either an abuser or someone with certain types of mental disorders.

Just about every abusive partner on the planet.

Ex girls friend?

Narcist control freak, Leave!

Abusive