As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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The average person will go on a date at least 100 times before they finally marry.
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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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