PLEASE HELP?! - Child Custody Issues in Ontario?

I'm in Ontario and I was in a similar relationship. I don't have kids but he did and I saw what happened to him because of his lies when he tried to gain access/joint custody of his daughter. No matter what you do, he's going to hate you and that is not a good environment for your child. Fight to keep her away and don't back down, do whatever it takes. He needs to see consequences of his actions. Good luck.