She called me a "charmer" good sign?

Her and I we were texting the other day for a bit, here's a small snippet of the conversation:

Me: ..."I'll work a little faster, if I'm lucky I'll be see that gorgeous smile of yours twice today."

Her: "Haha, see you soon you charmer."

I was picking her up to give her a ride to work (and then home; assuming I wasn't working late), hence her saying that. I've never heard the term 'charmer' before now.

Ladies, how often; and what exactly do you mean when you say that to a guy?
She called me a "charmer" good sign?
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