Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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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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Men fall in love faster than women do.
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Speed dating was invented by a Rabbi in 1999.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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40% of people who are rejected in romantic love slip into clinical depression.
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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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