In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
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When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
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In 1999, a fisherman found a love letter in a bottle from a soldier in WWI. He returned said letter to the now deceased widows 86 year old daughter.
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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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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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The left ear is more responsive to words of love and emotion whispered into it than the right.
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Couples' personalities converge over time to make partners more and more similar.
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When dragonflies mate, their tails form a love heart.
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