Girl glancing back over shoulder?

Hi!

So this happened yesterday at work. This cute girl who I have just exchanged some eye contact with, has started to walk by me a lot more and while walking past and away looked at me over her shoulder, with a hint of a smile. Obvious flirting I would say but as a man I might be somewhat oblivious to the signals of the fairer sex. So generally speaking, if and when you do this you want the guy to come over and introduce himself?
Girl glancing back over shoulder?
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