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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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
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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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As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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In 2010, Gary Richmond was beaten into a coma. He woke up with amnesia and no memory of his wife of 20 years. Subsequently, he ended up falling in love with her all over again!
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