'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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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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You burn 26 calories in a one minute kiss.
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Historically, sweat has been an active ingredient in perfume and love potions.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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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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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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