Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
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Raj from the Big Bang Theory is married to Miss India.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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You burn 26 calories in a one minute kiss.
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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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Sea otters hold hands while sleeping so they don’t drift away from each other.
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