Hate my ex girlfriend

Hello everyone, I'm new to this forum. I'll be right upfront about it - I found the forum by googling "i hate my ex girlfriend". I hate my ex girlfriend. We had been going out for 2.5 years and then out of the blue she dumped me. Not even a month later she had begun a relationship with another guy. 4 months have passed since we broke up and I have been trying to avoid contact. However, the other day I saw the two of them and it made me feel sick. I feel crushed and defeated. I resent her for that. I feel she treated me very badly and unfairly. I'm angered by the thought that she used me the whole time and then, when I was no longer 'good enough', replaced me without a second thought. She has also told me several insincere lies about "still caring" and how ours was not a "wasted relationship". I certainly feel like I got nothing from it, except the fear that I may never have another relationship, as I would rather not go to all the trouble just to end up feeling this way again. Does anyone have any advice for just forgetting her? Because, obviously I can't spend the rest of my life obsessing over how much I hate a woman who doesn't care about me. But it's easier said than done.

Put the internet to work for you. via Personal Recipe 2629984