Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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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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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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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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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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In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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