Am I a bad person ?

I met this guy and he has 2 baby mommas that does not bother me , but he's been showing a very evil side to him , his first baby mother is plus size and very beautiful but he says awful things about her to her face like calling her ( fat , ugly , and saying she was a mistake ) I don't agree with that because no woman should be put down like that but every time I ask him to stop he says it's none of my business , the second girl he had a baby with he avoids all the time and never gives her money for their baby , it's a real turn off to see him act like such a asshole cause he was not like that when I first met him , he buys me stuff but not the babies I'm to the point I don't even accept the gifts , I dont know what to do I know it's not my buiness but wrong is wrong and right is right , what would you ladies do ?