'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Men who kiss their wives in the morning live five years longer than those who don't.
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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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Twenty nine percent of women spend more time shopping for shoes than they do looking for a life long mate.
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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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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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