That really sucks Blazinit. At least you didn't waste anymore than 3 years on her. Now you can move on with your life. That chick she is with is a rebound. She needed one because she couldn't get over you on her own, and is lonely. Her relationship wont last long and by the time its over you will have moved on with someone way better. Next thing you know she will be trying to wedge her way back into your life and that's when you can rub salt into her wounds. Or you can take the high road but I would be so temped to be a bitch back.