Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
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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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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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You burn 26 calories in a one minute kiss.
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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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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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The average person will go on a date at least 100 times before they finally marry.
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