Husband lies

Anisa asked 2 years ago

I’m not a muslimah but I’m married to a Muslim man. When we met he told me he was not married, never been. He asked me, we had nikah a few months ago and i just found out he’s married to the mother of his children. They never ended that marriage but he’s agreed to for our sake. Its a very abusive unhealthy situation they had. How do i forgive this?