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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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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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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Couples' personalities converge over time to make partners more and more similar.
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Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
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