One True Love

A/N: Hello everyone. This is just a compilation of short stories about Harley Quinn and the Joker based on the song "Serial Killer" by Lana Del Rey. I would highly encourage you to listen to that song before reading this.

There is no established timeline. The stories all occur at different times. I will try to make it clear before each story when it occurs. Thank you for reading and please review!

This is my first time writing the Joker and Harley Quinn and light romance. Please tell me how it is so I can improve. I will try to post a story every two weeks, but you know how life gets, but I will try my best to stay on schedule.

Thank you so much for taking the time to read this. It means so much to me! Have a great day!

Time of Story: This story takes place when Harley Quinn ( Quinzel) is "helping" the Joker while he is in Arkham Asylum.

Disclaimer: I do not own DC comics or "Serial Killer" by Lana Del Rey.

Wish I may, wish I might

Find my one true love tonight.

Do you think that he

Could be you?

Everything was going by so quickly. Doctor Harleen Quinzel could hardly believe that she had finally become a psychiatrist, been hired to work in Arkham Asylum, and had been assigned to the Joker. Most of her achievements were due to her beauty and her charm. She had basically manipulated her way into her position. This, unfortunately, meant Harleen Quinzel was a bit inexperienced for her position. Harleen didn't think so, rather, she didn't know so. She believed that she had earned her job. Granted, it was not by ordinary means, but she had earned it.

Harleen walked confidently into Arkham that morning. Her red high heels clicked loudly as she walked down the hallway. Harleen pretended not to notice some of the annoyed looks some of the orderlies gave her as she made her way to Doctor Arkham's office. She didn't care if her confidence was annoying, she deserved to be confident; she had been able to make the Joker talk, a feat that no other psychiatrist was able to accomplish.

There was something special about the Joker. It wasn't the fact that he was a homicidal maniac; it was the fact that he seemed to personally care about Harleen. The Joker made Harleen feel something that she had never felt before. He made her feel elated, and after their sessions, Harleen would be noticeably happier the rest of the day. She thought about him often, probably more than she should. She thought about his smile and his crazy laugh. She thought about his green hair and pale skin, but most of all, she thought about his vibrant, blue eyes. Harleen had finally arrived at Doctor Arkam's office, jolting her out of her thoughts about the Joker. She wondered how she always seemed to find herself thinking about him. She opened the doctor's office door.

"Doctor Arkam?" Harleen asked hesitantly as she popped her head in the door.

"Oh, hello, Ms. Quinzel," the doctor said, rising from behind his desk. "Do come in."

Harleen entered the office and sat at one of the chairs in front of Doctor Arkham's desk. He sat down in his chair behind his desk. Harleen smoothed out her red blouse that smartly matched her high heels.

"You wanted to see me?" Harleen asked the doctor, giving him her most innocent smile. She thought she knew what this meeting was about.

"One of the prison guards told me about what you did yesterday."

"Well, doctor, I did a lot of things yesterday," Harleen said innocently. "I think you might have to be a bit more specific."

"You know very well what I am talking about!" Doctor Arkham said sternly.

"Oh," Harleen paused. "That."

"Why would you tell the guards to leave while you were alone in there with him?!"

"That was the only way he would talk to me!" Harleen said defensively, folding her arms across her chest. She twisted her face into a pout. That did the trick.

"Look, Harleen," the doctor said more gently. "I just want you to be careful. You know the Joker is dangerous."

"I know, but I'm really getting somewhere with him. You've read my notes. He's really telling me things that he won't tell anyone else."

Doctor Arkham sighed and rubbed his hand over his face. He looked back at Harleen.

"With all of that to say, I just want you to be more careful because I want you to talk to him more."

Harleen's breath caught in her throat. She sat forward in hopeful anticipation.

"I want you to start having sessions with the Joker twice a week instead of just once."

"Oh, doctor, I –"

Doctor Arkham held up a hand to stop Harleen from talking, "But, Harleen, I want you to promise me something."

"Anything," she said breathlessly.

"Be careful. The Joker is a dangerous. I'm not even sure I should be letting you see him. You are a relatively new psychiatrist."

"Thank you, doctor!" Harleen exclaimed happily. She stood up and held out her hand to shake the doctor's. He stood up, too. He looked at her hesitantly, staring at her out-stretched hand. "Don't worry about me, doctor," she reassured him. "I will be safe." She leaned over and gave him a small peck on the check. "I promise."

The doctor looked at Harleen slightly dazed at the surprise kiss on the cheek that she had given him. She happily buzzed to the door and gave Doctor Arkham one last grateful smile as she closed the door to his office.

Harleen quickly walked down the hallway with a smile on her face. She was thrilled that she could see the Joker more than once a week now. His green hair, ivory skin, and crystal blue eyes filled her thoughts. She was interrupted by a creepy chuckle coming from one of the inmate's cells. The chuckle caused her to slow a little, but she kept on walking, trying to ignore the prisoner until he said,

"He must be a lucky guy," he said to her. This made Harleen stop. Her smile gone now.

"What did you say?" she asked cautiously as she tentatively walked back towards the man's cell.

"I saw the way you were smilin'. They may call me crazy, but I know the look of love from a mile away," he said.

This greatly disturbed Harleen. She wasn't in love! Especially with the Joker! He was one of her patients!

"Like I said," the man said lustfully looking over Harleen. "He must be a lucky guy."

She looked at the man clearly appalled before turning her back on him and briskly walking away. In love? With the Joker? It was impossible! Besides, he didn't feel the same was she did. Or did he? She shook her head. Of course not! She needed to get a grip. The Joker was her patient. Their relationship was strictly professional. Besides, she had never really fallen in love before. She just hadn't really found a guy who clicked with her. She hadn't found what people call "her one true love" yet. Maybe there was no such thing.

But then why did she always think about the Joker? Why did she always feel so good when she saw him? Why did he always make her happy?

Could he be her one true love?