A/N- Wow! I have never had that many reviews on just one chapter, there was a total of fifteen reviews! Thank you so much. I hope you enjoy this next installment just as much as the first. And what about that hot sex the other night huh? Lol.

-Montgomery Residence-

Addison was slowly being brought to consciousness by the sense that something was not right. Slowly her eyes fluttered open. She stared right into the sleeping face of Derek Sheppard. At first she was confused by her surroundings then it hit her like a ton of bricks. She looked down at their entangled legs and arms. She shut her eyes tight praying that it was all just a simple dream. When she reopened her eyes and was met with the same sight as before she knew it was no dream. 'What have I done?' she thought. Slowly she untangled herself from Derek and walked into the bathroom. As the hot water of the shower rained down on her all she could think of was how she had done it again. She had ruined yet another aspect of her life. This time she was not the wife, but the dirty mistress. She quickly dressed in a pair of jogging pants and a sweatshirt and headed outside for a run. It was 7:30 when she got back to the house, which meant she had been running for an hour straight and her body still was not tired. She knew that she would be as sore as everything the next day, but right now the adrenaline was pumping so fast that she did not have time to feel pain. Once inside the house she checked the bedroom to make sure Derek was still asleep, and to her relief he was. She crawled onto the window seat and covered up with a blanket. She stared out the window that overlooked the large pond on her family's property. She sighed and laid her head in her hands. The next sound she heard was the creak of the hardwood floor as Derek accidentally made his presence known. Addison's head whipped up and she looked over at him with tear stained cheeks.

"Addison?" He croaked out, his voice full of sleep. She turned her face away from him as another tear cascaded down her face. Derek walked up to her and sat in front of her.

Addison still refused to look at him. "What did we do?" she asked almost in an inaudible tone.

"Addi…we…we can fix this." He said as he tried to take her hands.

She pulled away and looked at him harshly. "No we can't Derek. That is why we got a divorce, because we couldn't fix us. A marriage counselor couldn't even fix us!" She looked down at her hands. "I cheated once Derek, and that was low, but now I am the dirty mistress, which is even lower."

Derek took her face in his hands and tilted it up to where he could look into her eyes. As he looked at them they appeared as if all the color in them had been washed away by the tears. He had always found it odd that when Addison cried her eyes would change to the palest green he had ever seen. She told him that it was just him that saw that, but he knew that it was more than just him. "Addison we both made a mistake. We were drunk, and I was upset, and I took advantage of you." She tried to protest that what he was saying was not true, but he shushed her with his finger. "Why don't we just agree to forget about this? We will keep it just between you and me. I don't want to lose you over this Addi. I just got my best friend back, and I can't afford to lose her again." Addison lowered her head onto his shoulder. "So we are agreed?" She nodded her head against his shoulder. He lifted her face up to his. "It never happened." He said reassuringly.

"It never happened." She repeated after him.

-Seattle- Addison's Apartment- 3 Weeks Later-

Addison had heard a knock at her door and rushed to answer it. "I'm coming!" she yelled through the apartment. She flung the door opened and smiled wide. "Please tell me you brought mint chocolate chip."

"Would I even risk the bodily harm that would be inflicted if I didn't?"

"No, because you are a very smart man."

Derek chuckled as he walked into the room with an armload of ice cream and movies. It was a Friday night and every Friday night that he and Addison had off, but Meredith didn't, Derek would always come over to Addi's place and they would have a movie night. It was a time where they could both be themselves and not have to worry about anything that happened to them outside of the apartment's protective walls. It had become a treasured advent for both. They walked into her kitchen where the pizza was waiting for them. "You can put the ice cream in the freezer for now." She said as she poured them both some Pepsi.

"Why? You will have it back out in less than five minutes." He said sarcastically.

"Look mister I didn't put up with that when we were married and I am not going to put up with it now." She said wagging a finger at him.

He just gave her a genuine smile and placed the ice cream in the freezer. He grabbed the box of pizza and she took the drinks. They settled down next to each other in her TV room and popped in a movie. "What are we watching?" He asked as he took a bite of the hot meat lovers' pizza.

"You'll see." She said with a mischievous grin on her face.

Derek sighed and prepared himself for the worst. "Oh my god, Addison. Do you hate me?" He moaned as the movie began. She simply laughed. "I hate Sense and Sensibility."

"Shhh…the movie is starting." He rolled his eyes and stuffed his mouth full of pizza. "Make it through this one, and we will watch what you want to watch."

"Fine, but I am going to watch something that has some comedy." He said as he pouted like a five year old.

"You do that." She said as if she were talking to a little child. "Now hush or I am going to have to rewind it which will only prolong your misery."

Derek shut his mouth and kept it shut the whole time. Four hours later Derek looked down at Addison. She had fallen asleep in the middle of Shanghi Knights. Derek laughed softly as he slipped his arms underneath her limp body. Gently he carried her into the master suite. It was a large room with a beautiful bed in the back corner that was actually slipped inside the wall. There was a cutout in the wall especially made so that a bed would fit right in it. There was also a small window beside it to let in the light. He had always admired Addison's decorating taste, which was elegant but comfortable. He carefully laid her down on the soft bed then pulled the covers over her body. As the moon shone in through the small window it landed on her soft face and cast a light glow. He lovingly pushed aside a loose curl, and leaned down to kiss her forehead lightly. "Goodnight Derek." She muttered.

"Night Addi." He said just as soft and then turned to leave. Then out of the corner of his eye he saw something familiar. He walked over to her bureau and picked up a loose photo. It was the both of them at the hospital picnic that had been held in New York about four months before the affair. He remembered how unhappy they had been then, but for some reason they looked so happy in the picture. Then he remembered that he had canceled his surgeries for the day so that he could spend it with Addi at the picnic. He should have noticed how happy it made her just to spend time with her husband. Unfortunately he had been too unhappy with his life to realize that he was making hers just as miserable and pushing her farther from his grasp and closer to another man's reach. His heart ached with regret. Derek shook his head forcing the memories and pain to go away. It was over and done with; he couldn't go back and fix it, all he could do was enjoy his close relationship with his friend. With that Derek left and returned home to be alone with his regret and his scotch.

-1 Month Later- SGH-

Addison stood up from the chair at her desk and was overwhelmed with dizziness. She placed her hand against her forehead and closed her eyes. Taking a deep breath she opened her eyes and walked towards the door. She stepped out and accidentally ran right into Izzie Stevens. Izzie's coffee spilled all down the front of Addison's lab coat and dress. "Oh Dr. Sheppard I am so sorry. I was on my way to bring you Mrs. Johnson's lab reports." Izzie didn't know what to do. She didn't have anything to wipe the coffee off with, so she just stood there dumfounded.

Addison inhaled and was all of a sudden plagued with a bought of nausea. "Just lay them on my desk Izzie." She said quickly then ran off to the bathroom where she proceeded to void her body of its contents. Once she thought it was over for the time being she stood and washed her face. Just as she was finishing Dr. Bailey walked in. She looked at Addison's pale face and grimaced. "I'm fine." Addison said with as much reassurance she could muster.

"Uh huh." Bailey said in her typical tone. "Yeah and I am 5'10 with blonde hair and look like a bombshell." Addison just rolled her eyes and began to walk out when Bailey stopped her. "I'll be in room 516 at three if you want me to run some tests." She said in a serious tone.

Addison just nodded. "See you later Miranda."

-3:00-

Addison peeked around the hall to make sure no one would see her go into the room. She was relatively sure she knew what was wrong with her, but she prayed that she was wrong. Slowly she opened the door and saw Miranda standing in the room impatiently waiting on her. "Sit down and roll up your sleeve." Bailey said in her no nonsense tone. Addison shed her lab coat and slid up the sleeve of her slinky black dress. She sat down on the examination table and took a deep breath. "How far along do you think?" Bailey asked as she prepped Addison's arm for the needle.

"Almost two months, well if you want to be technical one month, three weeks, and two days." She sighed and clenched her face up as the needle pricked her skin.

"So I am guessing that you know who the father is." Bailey said as she filled up the first tube with blood.

"No Miranda I just thought that that sounded like one of the nights I had a good fling, so I thought I'd just tell that guy that he is the father." She looked over at Bailey who gave her a dirty look. "Yes, I know who the father is."

"Look, I don't have to do this." She said as she placed another full tube in her bag.

"I'm sorry, you're right." Addison tightened her hand and then released. "I'm scared." She said softly.

Miranda looked up at her. "I know Addison, I know." A few minutes later Bailey placed the last tube in the bag and took care of Addison's arm. "I'll get a rush on these labs." Bailey looked over at Addison as she lowered her sleeve, placed her lab coat back on, and pulled her hair from underneath her collar. She still looked nervous. Miranda had seen her scared before, but Addison was past being scared. She was petrified. "Addison if it is positive I know a good doctor you can see. She works at a hospital about thirty minutes from here. I could set you up with her."

Addison looked up at the woman and smiled a sad smile. "Thank you, I would appreciate that."

Bailey nodded. "I'll page you when the results are in." She quickly turned and left Addison alone in the room.

Bailey headed straight for the lab department to drop off the tubes. "I need these as soon as you can get them to me."

Just as the lab tech. was about to respond Derek walked up to her. "Dr. Bailey have you seen Dr. Shep…Dr. Montgomery?"

Bailey looked over at him with an annoyed look. "Do I look like your personal GPS system? I am not here to keep up with your girlfriend or your ex-wife. I am a doctor, a good one, and it is not in my job description to take care of you." She turned back around to face the young lab guy. "Like I said I want a rush put on these."

"Yeah, and so does everybody else." The young guy muttered as he took the bag.

"I'm going to pretend I didn't hear that." She said as she turned to leave.

"Wait Dr. Bailey you didn't put down a patient name. We can not process it without a patient name."

Bailey closed her eyes and spun around. Derek chuckled and was waiting for her to explode on the young lab tech. Bailey yanked the bag out of the boy's hands and scribbled something down. She handed it back to the young man. Derek busted out laughing when he saw what she had written for a name. There on the bag was Ima Hoar. "There are you happy now?" The young guy didn't say anything and simply nodded. "Mmmhmmm." She said annoyed and walked off.

"Dr. Bailey are you sure you don't know where she is?" Derek yelled after her.

"I am one hundred percent positive. Now go away!"

-45 Minutes Later-

Addison stood in the surgical gallery watching Derek below. She bit her lip in contemplation. She was so deep in thought that she accidentally bit into her lip. She quickly brought her hand up to her lip and wiped away the small drop of blood. 'How am I going to tell him? He is with Meredith, not me. We were never supposed to talk about that night ever again. How am I going to cover this up?' All of these thoughts plagued her mind. She was quickly brought out of her reverie by the steady beeping of her beeper. She looked down and saw Bailey's number flashing on the screen. Bailey had also left the room number that she was supposed to meet her in. Addison glanced once more down at Derek and was caught off guard to be met by his gaze. She could tell by his eyes that he was smiling at her. She forced the best smile she could, but she knew he would know something was wrong.

Addison walked into the room and saw Miranda sitting on the rolling stool. "Well?" she asked as she sat down in the chair across from Miranda.

Bailey sighed and handed Addison a small bag. "Here are your results, a referral to my friend, and a little advice from a friend." Addison slowly took the bag and closed her eyes. "Tell him Addison, he needs to know."

"How is the baby?" she asked slightly changing the subject.

"Good, healthy, so are you. Everything is right where it should be." Bailey reached out and squeezed Addison's hand. This gesture surprised Addison, but she took note of the kindness in the other woman's eyes. "He would want to know. You can't do this alone, so tell him." She stood and turned to leave. With her hand on the doorknob she stopped and turned back. "The sooner the better."

Addison nodded and sat in the quiet room. Tears slowly fell down her face. She was pregnant. She was pregnant with Derek's baby. She lovingly laid a hand on her flat stomach. She knew she would love this baby, but right now she felt horrible, because she honestly didn't want it.

A/N- Not where I really wanted to end it, but it is bedtime…Lol. Hope you enjoy, and please review. The more you do, the faster I post.