i am looking for a word to describe someone that flirts with everyone, even if they aren't attracted to that person and have no interest in carrying out anything further than flirtation?
A word that is not too derogatory is simply flirt:
one given to flirting; a person who acts flirtatiously. - AHDEL/Collins TFD
Anything beyond that is beginning to judge or impute a motive which may or may not be true.
Some flirts are charming and funny people who enjoy making people feel good, and want people to like them. Who knows why they do it? Sometimes it's fun for both people.
Some flirts are never serious. This can be annoying, and you might call such a person superficial. If a person does it solely to amuse themselves, you might call them a tease:
a person who makes fun of or annoys others, as with playful or taunting remarks; A flirtatious person. - AHDEL/TFD
When people do it with bad motives - of which you're aware - then you can look for more appropriate labels. But all you've described in your question is a flirt.
A gender specific word is coquette.
a woman who likes to win the attention or admiration of men but does not have serious feelings for them
"Coquette." Merriam-Webster.com. Accessed April 4, 2016. http://www.merriam-webster.com/dictionary/coquette.
Synonyms of coquette
vamp; ... tease; ... lead on, string along; manipulate, play (with)
"Coquet." Merriam-Webster.com. Accessed April 4, 2016. http://www.merriam-webster.com/thesaurus/coquet.
The final related word is "play," which is easily be converted to player. I doubt that "player" is superior to "flirt," though.
A male who is skilled at manipulating ("playing") others, and especially at seducing women by pretending to care about them, when in reality they are only interested in sex.
it can be 'casanova' also.....
A smooth-talking charmer who has mastered the art of finding, meeting, attracting and seducing beautiful women into the bedroom. One he accomplishes his goal, he leaves the woman in fear of having a relationship and proceeds to find his next conquest.
(From Urban Dictionary.)
A similar term to Casanova (above) is Lothario.
My iPhone Chambers app has
Lothario /lō-thäˈri-ō or -thāˈ/ noun (pl Lotharˈios) A seducer, a rake ORIGIN: From Lothario, in Nicholas Rowe's play, The Fair Penitent (1703)
protected by Community♦ Nov 1 '18 at 3:56
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