Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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Parents receive 1 out of every 5 Valentines.
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40% of people who are rejected in romantic love slip into clinical depression.
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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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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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Two in five people in the world marry their first love.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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