When dragonflies mate, their tails form a love heart.
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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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Sea otters hold hands while sleeping so they don’t drift away from each other.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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Two in five people in the world marry their first love.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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Historically, sweat has been an active ingredient in perfume and love potions.
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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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