In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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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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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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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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A poll has found that computer 'nerds' make the best lovers, with 82 percent of IT geeks claiming they put their partner's pleasure above their own.
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Two in five people in the world marry their first love.
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In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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