I am going to be completely honest with you. There is nothing you can do now to nice her back. Everything she complained about in the past it is too late RIGHT NOW.
You need to show strength. A man who loves and values himself is not going to play nice nice with a woman who is openly cheating on him. He is going to develop a plan to communicate to her that he is not going to put up with this BS.
He is going to remove her from the martial bedroom and ask her to leave the marital home. He is going to see a lawyer to find out what his rights are and plan accordingly.
He is going to move on with his life and make it as awesome as he possibly can. Then just maybe some day she realizes what a mistake she made and she EARNS a second chance with you.
Strength, Time and Space are the only thing that turns this around. Anything else will cause you to suffer immensely.