You need to see that your partner has suffered too, not from your anger, but from the weight of his or her own actions. If you believe your partner deeply regrets his actions, knows he was wrong, and even feels he violated his own personal standards, you will feel more trusting and open to forgiveness.
It took me a long time to learn that my self-consciousness is a signal of the judgment inside of me; I think you're judging me because I've judged for the same reasons. Through social norms or because of my very own judgy gene, I deemed xyz as unacceptable. I can't escape it. We're all judgmental and will be for all the evers. Maybe it's baked into our DNA? Well, I demand a restrand!
I am friends with all my exes! Many people find this very strange. Many years ago I had an extremely bad break up, and because there was so much hurt between us we decided to not speak. This was one of the most difficult and challenging times of my life. But as I get older I have little time for bitterness, anger, or hurt. If there is an ex in your life whom you feel anger towards or cannot speak to them, let them go.
One of my childhoods was happy. The B&W movies projected on our small TV screen, more often than not, contradicted the drama I was living in my own home movie reels. But there were exceptions. In fact, the images of our television's B&W movies were very real to me. Sidney Poitier was one of those images, and thankfully, he made repeat appearances.