Well, we had ourselves wondering for a moment. Why should the ex-girlfriend stick to him but ended up breaking his heart in the end? I had myself wondering : What's her motive?

But the answer to the topic itself is clearly proven, isn't it? Leave her. Forget her. Dump her. Yessss, stand up for your rights, boy. What for wasting your time sticking around with her when in the first place, she only wanted to play around with your feelings?

But before leaving/dumping/forgetting her, call her up and demand for explaination. We're sure your pride cost you more than everything. You're not her toy that she can play around with and she doesn't have the right to mess around with your pride. Have a "heart-to-heart" session with her. And this "heart-to-heart" session means, trying to talk things out without raising your voice to her, or even, raising your hands to any parts of her body.

Revenge is a big no-no! Like the normal saying, what goes around comes around. She will get what she deserve. Revenge may make you satisfied but that's not what you should do.

Instead of you wasting your time crying and wondering why your ex treated you this way, use your precious time to move on with someone new. Prove to her that you're not a little boy who will go around crying the moment she left you. Prove to her that you can live without her, and move on with your life. And prove to her that she's not the one whom you're going to waste your precious time with.