Don't do it man. Here's a little advice about girls:
If you get little "flashes" like they're interested, but nothing's happening between you, then nothing ever will. They're basically flirting and leading you on because the attention makes them feel good.
I know that sounds pretty jaded and all, but 99.9% of the time it's true. If you keep pursuing her when she isn't coming to you, you'll just end up feeling like a jackass when it all goes to shit. Forget about it, seriously.
If you get little "flashes" like they're interested, but nothing's happening between you, then nothing ever will. They're basically flirting and leading you on because the attention makes them feel good.
I know that sounds pretty jaded and all, but 99.9% of the time it's true. If you keep pursuing her when she isn't coming to you, you'll just end up feeling like a jackass when it all goes to shit. Forget about it, seriously.