Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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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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Men fall in love faster than women do.
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Wearing red increases attraction.
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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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Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
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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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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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