Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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Twenty nine percent of women spend more time shopping for shoes than they do looking for a life long mate.
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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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The single biggest predictor of love is proximity.
30
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.
464
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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