'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 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.
28
You burn 26 calories in a one minute kiss.
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Two in five people in the world marry their first love.
270
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
Historically, sweat has been an active ingredient in perfume and love potions.
309
Men fall in love faster than women do.
32