Hate takes a lot of energy if you're going to do it right. It's not worth it.
This guy did some really crappy things to you. That won't ever change. How you think about it can. You don't have to forgive him, you don't have to think about him at all unless you're talking to your daughter about him. And in not too many years she'll understand what he did to you and then she'll understand why you feel the way you do. Honesty. You've got to have to have trust.
I've given hate and hating a bit of thought, this is no spur of the moment flippant advice. You really can decide to let it go, not forgiving not reliving not dwelling on, but living the good life you have now with the good man you have now.
Stop letting the jerk in your past ruin your now and future.