I'm sorry that he did that to you. It still surprises me how many people share the same story after living with an alcoholic. My ex refused to call what she did cheating, too, even though it was clearly cheating. They like to minimize what happened and change how you remember things.
Yeah, I did that with her, too. I was single for 5 years before I met her, and I really, badly, wanted her to be the one and only. She couldn't measure up to it, and I stayed even though it was toxic. I think the most useful thing I've learned since starting recovery is that you can't change someone else, no matter how hard you try. They will always do what they want. They will change when it suits them.
It seems that your post got cut off, so I was hoping you'd reply to this with what you meant to say after, "I know what from anger."
Sorry to hear about your situation, and I just want to let you know, "This, too, shall pass."