Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Two in five people in the world marry their first love.
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Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
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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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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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40% of people who are rejected in romantic love slip into clinical depression.
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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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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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