Why does my ex girlfriend act like this?

She left me at the end of 2018 and we have a child together. This was the second time she left me, the first time she jumped straight to a guy then came back, I foolishly took her back, the second time she started gas liting me and broke up, found it she was talking to another guy! So I moved on.

2.5 years of silence, then she initiated a custody battle, she went chaotic, false accusations, withholding my child typical.

Things went to a stand still, she still refuses to sign any custody arrangement even though she's the one who wanted one so bad.

But now she's just a nasty b*tch to me, every interaction is belittling me, accusing me of something grotesque, there is no cooperation, always yelling or threatening, down talking, and she acts like I did something to her. I am just trying to move on but she won't let me. It seems like she's trying to keep me trapped in conflict with her in this imaginary situation that she created. Looking online or seems that several thousands of men are going through our dealing with something similar. Is this just female behavior? It feels like I'm dealing with a child.

Why does my ex girlfriend act like this?
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