Parasocialite

A mix between the word parasocial and socialite, parasocialites are people who activley partake in a one sided relationship to someone who does not acknowledge their existance and ENJOYS doing it. They truly believe they have a mutual bond, usually with a celebrity or online personality.

Person 1: (Replies to every post by a famous person and acts like they are mutual friends by cracking inside jokes they made up)
Person 2: What a parasocialite...