Why did she lead me on?

This girl at work led me on for 7 months I asked her out and she said no which I'm fine with. I mean I have to call with it. Now she avoids me then comes back to me. After all that now she just gives me eye daggers.

Wtf? I left her alone respected her privacy and she behaves like a child, so immature.

It's making me a annoyed to deal with it.
Why did she lead me on?
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