"I don't have a personality disorder!"

Living your everyday to day life sometimes gets a bit busy , maybe exciting and even a little stressed. But living three separate life's, now that sounds impossible and very complicated. Living the life of a hot blonde popular cheerleader at school and constantly cheats on her boyfriend. Living the life of a very closed off dark haired emo, living in depression. Also living the life of an open lesbian nurse who wouldn't eat anything that comes from an animal. But her family and friends are worried and want to know who the REAL person is. Is it one of the characters she puts on for show? or is it someone darker than that? What is she hiding from us and how can she live 3 separate lives? and who is this person? She will never admit to anyone or even herself that she has a personality disorder because she believes she's normal, but is she?