Hi Buns and Cakes,
Things are fine if everything’s going their way and they aren’t asked to do anything for anyone or contribute anything; the second they are asked to act responsibly, they rest up and start spouting all kinds of horrid things. I know how disgusting their language can be.
Just take this as further proof of the monster he is, and how lucky you were to get away.
These men should be forced to pay for their kids. Child Maintenance will communicate with him if you tell them that he is abusive, then you won’t need to. And he will be penalised if he fails to pay up.