One in five long-term love relationships began with one or both partners being involved with others.
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When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
A man's beard grows fastest when he anticipates sex.
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Historically, sweat has been an active ingredient in perfume and love potions.
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In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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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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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
41