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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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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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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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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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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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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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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The average person will go on a date at least 100 times before they finally marry.
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