I'm freaking out over my wife in spite of everything that I've done
What happened? Why are you freaking out?
She has been cheating on me with random guys and doesn't know I know.
I understand, it's unfortunate that relationships don't work out sometimes, even if you put a lot of work into them. If you want to break up with her you should tell her that.
I was going to marry her, I am heart broken.
I am sorry this is happening to you. I know it's hard but at least you didn't fund out after you were married. I hope you get out of this relation and move on.