Should I admit I can't get her out of my head?

There's a girl I used to work with that we both flirted at one another constantly. It was bad for the others that were around. She left for the Navy, got engaged but is single now. Didn't work out. She's coming home for her time off about two weeks off duty. I have a feeling I'm already going to talk to her anyway but curious as to what others might do in my situation.
Should I admit I can't get her out of my head?
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