The pain of finding out the one person you love above anyone else in this world is unfaithful towards you can be unbearable. I know exactly what you're going through, and your pain. It rips your heart to shreds. Stay strong, and remember if she was willing to cheat on you, she's not worth crying for. You'll find someone else you'll love more, and that will love you back and not go ahead and do such a terrible thing.