Girls, This girl keeps randomly poping into my head?

I do know this girl to a degree and we always happily talk to each other. She lights up when she sees me everytime. We don't know each other that well but over last few months we have naturally just clicked. She started giving me a big smile and wave when she didn't know me. Now we comfortably chat with each other and it feels right. It feels like we could just keep talking. But she was working so I didn't want to distract her too much. Now I can't stop thinking about her and I feel this warm fuzzy feeling everytime I think of her
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Sorry I meant popping**
Girls, This girl keeps randomly poping into my head?
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