Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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Twenty nine percent of women spend more time shopping for shoes than they do looking for a life long mate.
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Parents receive 1 out of every 5 Valentines.
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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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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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