Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
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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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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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Kissing an infection-free partner is good for your teeth!
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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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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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