Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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You burn 26 calories in a one minute kiss.
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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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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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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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Twenty nine percent of women spend more time shopping for shoes than they do looking for a life long mate.
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