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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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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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
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Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
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