why is harley quinn in love with the joker
Harleen becomes fascinated with the Joker while working at Arkham Asylum and volunteers to help treat him. She falls hopelessly in love with the Joker during their sessions, and she helps him escape from the asylum more than once. When Batman returns a badly injured Joker to Arkham, Harleen dons a jester costume to become Harley Quinn, the Joker's sidekick. The Joker frequently insults, ignores, hurts and even tries to kill Harley, but she always comes back to him, convinced that he truly loves her.