Two in five people in the world marry their first love.
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The single biggest predictor of love is proximity.
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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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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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In 1537, England's King Henry VII officially declared February 14th the holiday of St. Valentine's Day.
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Parents receive 1 out of every 5 Valentines.
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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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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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