Historically, sweat has been an active ingredient in perfume and love potions.
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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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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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Men who kiss their wives in the morning live five years longer than those who don't.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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