A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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The single biggest predictor of love is proximity.
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Two in five people in the world marry their first love.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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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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