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Addison hated when her parents threw dinner parties. It was always a group of stuck up doctors, down talking each other. It was her job to sit, act polite and be a trophy child. One who went to bed at nine pm and got 100% in every class. She had to laugh at the jokes even if it was stupid and smile while they talked about nothing. Sadly, tonight there was going to be one, and Addison had to spend the whole day cleaning her room, and getting dressed. The only plus to the whole situation was that Derek was home, and when she called and told him that she would be in her room the whole day, he promised that he'd hang out in his, so they could talk. True to his word, he opened his window, and called to Addison.

"Hey stranger." He said with a smile. Over the last week, Addison, Derek, Mark and Meredith began to hang out daily.

"Oh, thank god you're here. I swear to god, this is so shitty." Addison whined.

"I bet. I'd hate to have those parties at my house." Derek said sympathetically. Suddenly, both Derek and Addison heard a smash and screaming.

"They're fighting again." Addison sighed.

"Your parents?" Derek asked.

"Who else?" Addison asked.

"What are they fighting about this time? It's like whenever they're home, they're fighting." Derek said.

"Yeah, welcome to my life." Addison sighed, and she walked over to her door, and opened it quietly. She listened for a few seconds, then she returned to her window.

"Well?" Derek asked. Addison was happy that he cared. For about 10 years, all her parents did was fight. She was glad she finally had someone to vent to.

"He called her a stupid whore and asked her how she could do this. She said he was a cold, evil bastard." Addison said, emotionless.

"Oh." Derek said.

"Yeah. Well, I'd better get dressed now that my room is clean. I don't get why I have to clean my room for these stupid parties. We close my door the whole time. It's not like people come in here!" Addison huffed, and she shut the blinds.

Derek hated to hear that Addison had become so accustomed to hearing her parents fight. She took it as nothing. He remembered that when his father was alive, his parents hardly ever fought. There was a knock on his door, and Derek's mother walked in.

"Hey Derek, I- what's wrong with you? You look so sad." Carol asked Derek.

"Oh, it's just Addison. Her parents are always fighting. She thinks its so normal, that she doesn't even react." Derek sighed.

"The neighbors?" She asked, and Derek nodded. "You've taken a shining to this Addison, haven't you?"

"What? Well, I guess. She's really fun." Derek said. "And she's smart, and kinds, and she hasn't fallen for Mark, and she's really pretty...what?"

"Oh, nothing." Carol said knowingly.

"You think I like Addison?! No! No! She's great. She's amazing but- stop looking at me like that mother!" He exclaimed.

"I'm not looking at you like anything!" She said innocently.

"I don't have feelings for her. I mean, I'd be lucky if I had a girl like her. She's gorgeous, and she's so brilliant- how do you know these things?" Derek asked, realizing that his mother was right.

"I just know." She said with a wink.

"And then she said, 'Of course not! That's my appendix!'" One of the doctors at Addison's parent's party said. Addison only caught the punch line, but laughed anyways. The doctor walked away, looking pleased with himself.

"What a loser." Someone whispered to Addison. She spun around to face an attractive man, who looked to be in his late 20's.

"Well, I wouldn't call him a loser." Addison said.

"I would. That joke was the stupidest thing I've ever heard. I just hope you know that all doctors are NOT like that!" He said jokingly. "I'm Dr. Jamie Bradley."

"I'm Addison Montgomery."

"Oh, you're Maddy's daughter!" He exclaimed. Most people called her mother Madison or Dr. Montgomery. Only her father called her mother Maddy, so Addison was surprised.

"Yeah."

"What are you doing!" Addison's mother snapped. "I told you NOT to talk to her until I talked to her. She doesn't need to know yet!"

"What's going on mom?" Addison asked. She was starting to get nervous.

"Why? Why can't you tell her? I'm sure she'll be happy!" Dr. Bradley snapped back.

"No she will not! She'll be pissed." Madison said angrily.

"What is going on?!" Addison yelled. A few people turned and looked, so her mother grabbed her wrist and pulled up the stairs. She continued pulling her until they reached Addison's bedroom.

"That hurt!" Addison snapped at her mother.

"Well, I couldn't very well tell you out there, could I?" Madison snapped back.

"What couldn't you tell me? What's going on? Who was that man? Why wasn't I supposed to meet him?" Addison asked her mother frantically.

"Okay. One thing at a time. I couldn't tell you that your father is gone. He packed his things and he left two hours ago." Her mother said coldly. Her words stung Addison's heart. She began to cry softly.

"You didn't tell me?"

"I didn't want you to get all worked up." Her mother said even more coldly. "Okay, next thing. I'm pregnant." Addison's jaw dropped, while she was still crying.

"What? Daddy left you while you're pregnant?! How could he?" Addison asked.

"That man is the baby's father, and I didn't want you to meet him yet because I wasn't going to tell you yet." Madison said, without any any emotion.

"What?! I-" Addison paused. "That is too much information to take in fifteen seconds."

"Addison." Her mother said calmly. "I know this is a lot to take but-"

"NO!" Addison screamed. "NO! You have no idea how hard this is to take! So in about fifteen seconds, I've learned that my daddy's gone, I'm going to have a love child as a sibling, and that my mother is a SLUT!"

"You little..." Her mother paused. "Honey, I made a mistake."

"Oh. So it was a one time oopsie? That's different I guess." Addison said sarcastically.

"Well, it wasn't a-"

"YOU'VE HAD SEX WITH THIS GUY MORE THAN ONCE?!" Addison screamed louder than ever. "How long mom? How long have you been sleeping with other guys?"

"Guys or the one you met today?" Madison whispered.

"GUYS?! GUYS?! MULTIPLE? Okay mommy dearest, you saint like one. How long have you been cheating on your husband? I don't want to know how many men." Addison yelled.

"Six years." Addison's mother said so quietly, Addison almost didn't hear her.

"Six? Six years?" Addison repeated.

"Addison."

"Don't! Don't 'Addison' me! You are a slut mom! You have been for six years now. Why? Was dad mean to you? Did he beat you? I don't think so. I am sorry I called you a slut, but I am being honest. I am leaving for the night, because I don't want to say something else that terrible." Addison said calmly through her tears, which were now falling like rain.

"Where are you planing on going?" She asked Addison, as Addison pulled out an over night bag. She began filling it up with clothes.

"Derek's." Addison said quickly. Suddenly there was a knock on Addison's door.

"Can I come in?" Asked Dr. Bradley as he opened the door.

"GET THE HELL OUT!" Addison screamed.

"Addison, please don't swear." Madison said quietly. Madison was not angry at Addison's behavior. She felt sorry for Addison, and wanted to let her get out of her system.

"Don't swear?" Addison screamed as she started to walk out of her room. "DON'T SWEAR?" Addison looked around and saw all the people at the party. She didn't care that everyone was watching. "You're a lying, cheating, adulteress whore! You made the parent I actually LIKE leave me! But GOD FORBID I SWEAR?!" She ran to the front door and opened it. "Good night everyone." She said to the guests.

"ADDISON!" Madison yelled desperately.

"Good night mother! I shall see you tomorrow, but in the mean time GO TO HELL!" She said as she slammed the front door.

"Addison? Hi honey, it's a little late- are you crying?" Derek's mother asked.

"I need-" Addison sobbed.

"What's the matter?" Ms. Sheppard asked.

"My mom's pregnant. She's been cheating on my dad for six years. I met the baby's father by accident and my dad left me and my mom." Addison sobbed uncontrollably. Ms. Sheppard took Addison in her arms and hugged her. After a few minutes, she escorted Addison up to Derek's room. She then knocked on the door.

"Hey mom, can- Addison? What are you doing here?" Derek asked. "Have you been crying?"

"My parents." Addison said before she dissolved into fresh tears.

"She's going to stay here tonight." Carol said to Derek and he nodded. Addison walked over to Derek's bed and sat beside him. He pulled her into his arms as she sobbed on his shoulder. "I'll leave you alone." Carol said, closing the door.

"I have an extra cot in my closet. Mark usually uses it. I'll get it." Derek said. Addison held him tighter.

"Not just yet." She whispered. "I just need...someone."

"Don't worry Addison." Derek said, catching her eye. "You've got me."

"He left." Addison sighed. "She's been cheating on him for six years. She's pregnant with some guy's baby."

"Oh my god." Derek whispered.

"I'm more mad at him than her." Addison whispered back. "He left me with her. He didn't even say good-bye."

"Would you rather live with him?" Derek asked.

"Well, I'd rather live with him than her, but I don't want to live with my dad." Addison said.

"Why?" Addison paused for a minute, still sitting in Derek's arms.

"Because." She said. "I'd have to leave you."