Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Parents receive 1 out of every 5 Valentines.
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One in five long-term love relationships began with one or both partners being involved with others.
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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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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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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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In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
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