Have you ever wanted a person who just played with your feelings, and then ended up in a stable relationship with someone else? How do you coop it?

It feels horrible. I just cut things with her off. Now it seems to me like she has no conscience, she doesn't care. So why do I care?

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Problem is, we are at the same university, what to do if she start talking to me? Just being polite and that's it? I can't ignore her there.
Have you ever wanted a person who just played with your feelings, and then ended up in a stable relationship with someone else? How do you coop it?
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