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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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
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Men fall in love faster than women do.
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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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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
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