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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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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Historically, sweat has been an active ingredient in perfume and love potions.
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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.
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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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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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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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