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Her bf finds out we saw each other and she lied about it and they break up. And then two days later she sends me an email saying that she has to defriend me on fb because she doesn't want to be lying in every relationship she's in...
If she has to lie to other people about talking to you, its obviously not important enough to her to be up front about it. Either she is naive and thinks that she can play the tango in secret, or she is simply toying with you. One way or another, she has to grow up and be up front about whats going on. I mean Facebook is serious business...
All in all, just move on, there are plenty of fish in the sea, if you keep tethering yourself to one, you will never catch another. She may seem the right fit for you, but obviously she isn't serious enough to make even a simple commitment for you.