Erotomania

Erotomania is a mental illness where someone believes that someone else is in love with them, even though it is not true. For example, if you have erotomania, you might think that a celebrity or even someone you don't know is in love with you, even if they have never met you and don't even know that you exist! Erotomania can make someone very happy, but it can also be very dangerous because they may try to contact the person they think is in love with them, which could make them feel scared or harassed.