Using Facebook or another social networking site to flirt with old acquaintances or newly networked friends. Usually used as an icebreaker or foreplay before actually meeting up in person and doing the 'deed'.
"It took a month of flirtbooking before that chick I went to high school with decided to 'get together' "
by WIllDawg April 23, 2009
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Some random friend of Matt's just totally liked all of my bikini pics on flirtbook.
by TheRealAwhit April 22, 2011
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To flirt with somebody overtime on Facebook because your both too shy to break the ice. Flirtbooking starts with clicking "like" on all of their post's, then comments on it to saying pictures of them are cute. Eventually you're drunk and message them at 2:46 in the morning.
Yeah I met Sara at the bar a few weeks ago but I'm not sure if she's into me so I'll just flirtbook with her and see what happens.
by moonshine69 March 18, 2011
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1. The two people flirt and it appears on the FB newsfeed. YET, they don't seem to know they are flirting. Their friends just look at their spammed newsfeed with and expression that looks something like this -_-

2. A person/people who looks at a book written by a person named Derek for flirting advice. That doesn't exist.
*after a series of flirtiful events*

Derek:Why don't you guys just make babies.
Girl:Wth?
Guy:Where did you come up with this???

^^^^^these people would be the flirtbook fools.

Derek: oh man i have to make a name to express myself. oh I got it.
by the/annoyed/one.______. August 31, 2010
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