It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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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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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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The average person will go on a date at least 100 times before they finally marry.
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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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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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