Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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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.
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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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Twenty nine percent of women spend more time shopping for shoes than they do looking for a life long mate.
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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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In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
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