Hormone drives sexy women to infidelity, says study

PARIS (AFP) - - Women with high levels of a key sex hormone are judged more attractive by themselves and others, and may be more inclined to cheat on their partners, according to a study published Wednesday.

University of Texas psychologists Kristina Durante and Norman Li found that women with high concentrations of the hormone oestradiol were likelier to flirt, kiss and have a serious affair outside an established relationship.

In a study published in the British journal Biology Letters, the duo described the behaviour as "opportunistic serial monogamy" and not related to one-night stands.

Instead, they suggested, such women were more probably being prompted to trade up in their relationships -- to find a better partner.

source: http://sg.news.yahoo.com/afp/20090114/tts-health-sex-women-hormones-c1b2fc3.html

Passion of Sex = Unfaithful?