My girlfriend is always fighting with her babydaddy?

So I have been dating and living with my girlfriend for 3 months now. She has a child with this guy and she says she doesn't give a fuck about him but she will always post subliminal stuff on her social about the situation. They recently got into it and the guy said he wouldn't be seeing his child anymore because she only wants him to see the kid for a couple of hours a week and she told me that "this made her so happy she doesn't have to deal with him" yet the next day she's calling him trying to get him to change his mind, what is going on here?

My girlfriend is always fighting with her babydaddy?
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