Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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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
16
According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
14
Yawns are more contagious among people with closer relationships.
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Women rate men more attractive if other women are looking and smiling at him.
17
Intelligent men tend to be more sexually faithful.
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