Most Helpful Girl
I doubt this guy alone allowed her to have such feelings of aggression towards you.
Chances are she was not happy for a long time in your relationship but never voiced it.
The fact that she's treating you so cold, shows the extent of how she does not care about you.
She seems rather selfish.
You owe it to yourself to heal your wounds and eventually find better.
Someone that cares about you... doesn't recycle you.