Quoting: Amazonking
Either way, she is not a keeper.
That is very true. She has already shown that she has no integrity. She is a liar, cheat, and totally has no repect for him. You can't change that no matter how much 'communication' you pretend to have. She already 'comminicated' that she doesn't have any integrity. If you want to be a whimp and try to work things out or communicate more with her after she cheated on you, she will just see you as even more of a whimp than she already does.
I've learned that one of the most important things that holds people together is trust. I have a great relationship with my wife and trust her completely. I went through quite a few relationships before I wised up and set some permisteral standards for what I simply would not accept. A cheater was one of them.
Funny thing about standards, once you start living them, the people around you tend to rise to their level.