Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
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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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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
Historically, sweat has been an active ingredient in perfume and love potions.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Two in five people in the world marry their first love.
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'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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