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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40% of people who are rejected in romantic love slip into clinical depression.
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A man is more likely to get a woman's phone number if he is accompanied by a dog.
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Women rate men more attractive if other women are looking and smiling at him.
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Yawns are more contagious among people with closer relationships.
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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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