Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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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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As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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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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Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
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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.
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Parents receive 1 out of every 5 Valentines.
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