A man is more likely to get a woman's phone number if he is accompanied by a dog.
20
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 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
Women rate men more attractive if other women are looking and smiling at him.
17
Yawns are more contagious among people with closer relationships.
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