Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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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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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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Speed dating was invented by a Rabbi in 1999.
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Historically, sweat has been an active ingredient in perfume and love potions.
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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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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