You didn't mean to fall for him.It was a sudden attraction... You and Joker met at the Arkham Asylum.You chatted from time to time when you could.You shared lots of things in common,and you didn't even realize how your curiosity grew into love and desire.It was only a matter of time before you and Joker broke out of Arkham,and you helped him with it.You were hoping for things to continue like they used to,but his interest for you disappeared.No matter what you did,he just wouldn't care.Maybe it's all a facade to keep you on your toes,or he genuinely lost interest in you.