Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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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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People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
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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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Raj from the Big Bang Theory is married to Miss India.
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For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
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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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