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, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
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One in five long-term love relationships began with one or both partners being involved with others.
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Speed dating was invented by a Rabbi in 1999.
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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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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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