When dragonflies mate, their tails form a love heart.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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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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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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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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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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Two in five people in the world marry their first love.
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Men who kiss their wives in the morning live five years longer than those who don't.
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