Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
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Wearing red increases attraction.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Men fall in love faster than women do.
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Historically, sweat has been an active ingredient in perfume and love potions.
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40% of people who are rejected in romantic love slip into clinical depression.
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According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
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