Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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40% of people who are rejected in romantic love slip into clinical depression.
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Couples' personalities converge over time to make partners more and more similar.
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When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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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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'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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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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