Speed dating was invented by a Rabbi in 1999.
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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In 1999, a fisherman found a love letter in a bottle from a soldier in WWI. He returned said letter to the now deceased widows 86 year old daughter.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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Wearing red increases attraction.
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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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