Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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Couples' personalities converge over time to make partners more and more similar.
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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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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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When dragonflies mate, their tails form a love heart.
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A poll has found that computer 'nerds' make the best lovers, with 82 percent of IT geeks claiming they put their partner's pleasure above their own.
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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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