Cheers mate, it's horrible to find out that someones like that though. Can't believe she'd do that to someone she "loved".
Hard luck mate. But you know what?? you are the f***ing prize man!! if she can't see that then it's her fault. If you've treated her with respect, and she's gone out and done this to you, she doesn't deserve a moment of you feeling gutted about her.
And don't take this as her rejecting you. Don't let the rejection get to you. She's obviously fickle about her feelings, and just think that if the relationship had gone on for longer, how much bullshit you could have been fed by her.
Good riddance to bad rubbish. If you have some sweet memories with her, cherish those and move on. Don't think about what just happened, and don;t hold a grudge. And as is always the case, the best remedy to getting over a girl is getting inside another. So pick yourself up, take a good long shower to wash any thoughts of her off you, and come out that bath feeling like a new man again. Go out on the pull, and enjoy the company of your friends.
Do not choose revenge, because not going for it is sweet enough revenge as it is.
Good luck fella. Talk to us some more if you need any more support.