Woman like her won't care about the devastation they have caused you. I agree with what others have said. Focus on yourself, making yourself happy, eating healthily and looking great.
I speak from experience as being through the situation myself. My partner left me for a woman he was working with. At first I moped around feeling miserable and even went round to her house to confront her (luckily she was out at the time).
In the end I started exercising, looking after myself, dyed my hair got a haircut and bought some new clothes. I ended up feeling fantastic and not caring anymore about either of them.
They on th other hand were miserable. She didn't trust him one bit as she worried constantly that he'd be running off with someone else, just as he did to me with her and she wouldn't, and five years later on, still won't let him out on his own for drinks with his friends. She's incredibly jealous and possessive and they're both unhappy. Karma got them both and that for me is the best kind of revenge!
I'm sorry you're hurting now, I know how it feels. You will recover from this though and be a much stronger person and in the end you'll be relieved she did you a favour and took him away from you.
Come back to this thread in a years time and I'm sure you'll see I was right! 