Derek jumped off of the couch.

"What are you doing here Mark" he yelled.

Derek didn't want to deal with him.

"I came with Addison" Mark looked at Derek.

Derek ran his fingers through his hair.

"With Addison. She's here right now?" he couldn't believe this. What kind of friend would do this to another.

"We were worried. So Meredith lied to me" he knew that she lied.

"Don't bring her into this" he yelled.

"What are you doing Derek? Are you and Meredith?" he couldn't finish his sentence.

"It is none of your business. The way I see it. You lost the right to know anything about my life" Derek looked toward the door. He had to find Meredith. He couldn't let her find out that Addison was here. He wanted to be the one to tell her.

"Derek what happened between me and Addy..." he didn't get to finish his sentence.

"I don't want to hear it Mark. You can have her" he yelled walking toward the door.

"At least talk to her" Mark pleaded.

"No I have nothing to say to her. It's over between us" he wouldn't deal with this now. Not until he found Meredith.

"So you are with Mer. She is the only woman who would keep you from Addy"

Derek turned around. "I told you not to say her name. She has nothing to do with this mess"

"The way I see it Derek. Meredith has everything to do with this. You never let her go. The day you married Addison. You prayed that Meredith would show up. Stop the wedding." he yelled.

"Your right this is my fault. Now I will stop making mistakes. Addison and I are over. This friendship that we used to share is over also" he yelled and turned the knob.

"She feels the same about me. She hates me for what I did to you" Mark shook his head in disgust.

"I don't know" Derek said as he left the office.

Meredith walked down the hall. She couldn't stop smiling. Not when she had Derek on her mind. Life was good she thought.

"You" Addison yelled.

Meredith turned around. She realized that Derek's past was catching up to him.

"Problem?" she tried to remain calm.

"Yes I have a problem. Where do you get off lying. You could have told the truth" Addison walked closer to the woman. The woman who was no doubt seeing her husband.

"Your one to talk. Sleeping with Mark get boring?" she regretted saying the words.

Addison was about to slap her when someone grabbed her hand.

"I wouldn't do that" Derek looked at Meredith.

He could tell she was upset.

"Leave her alone" he positioned Meredith behind him.

"Derek we need to talk" Addison pleaded.

"If you came all this way to talk. You may as well turn around. I have nothing to say. Your lawyer will be hearing from mine." he turned around and looked at Meredith.

"Are you okay" he whispered.

Meredith smiled. Of course she was alright. Her knight in shining whatever was here. He came to her rescue.

"Derek please. It was a one time mistake" Addison wouldn't lose him. Not to this slut of a woman.

"Mistake or not it's over. Don't kid yourself Addy. It's been over for so long. We both made mistakes. Hell I never stopped loving the woman standing behind me. That lead you into Mark's arms. Lets just put this behind us. You can have the brownstone. I have my own place here in Seattle" Derek held onto Meredith's hand.

Meredith swallowed the lump in her throat. He admitted to Addison that he loved her. He was in love and she couldn't stop smiling.

"It's not over Derek" Addison wouldn't let him go.

"Yes it is" he turned and walked away with Meredith.

Addison stood staring after them. How could he be so cruel. He was breaking her heart. She never felt so alone.

"Are you okay" Mark walked up behind her.

"He wants a divorce" Addison cried.

"I know" Mark pulled her into his arms. He had to talk to Meredith. He refused to lose her as a friend. She would forgive him. He was certain that she wouldn't stay mad.

"I'm not leaving. I will not give up on him. You have to help me Mark" Addison looked up at him.

"What are you talking about. How can I help?" he was confused.

"I don't know the exact plan yet. You have to help though. You are the reason that my marriage is over" Addison yelled.

Mark was quite. He was at fault. Though he didn't hold it all alone.

"I'll try to help. I just don't think I can help" he didn't know what the woman had planned.

Addison didn't know what to do yet. She wouldn't give up.

Meredith watched Derek changed clothes.

"If you need to talk to her. I understand" she wanted him to have the chance. The chance to talk to Addison.

"Meredith we have nothing left to say. I told you my marriage is over" he walked over to her.

"Good" she smiled.

"I love you Meredith Grey."

"I love you too. I am sorry that it took me so long. I should have told you a long time ago" she felt guilty.

"No we are not going to have regrets. We are going to live for now. Right here with you I am so happy. It may have taken us some time. But we are here Mer." he kissed the top of her head.

Meredith was ready to go home. She didn't want to go to the house. Not when Mark knew were she lived. "What about Mark?" she asked.

"I don't know. I may never trust him again" Derek wouldn't let him take Meredith away from him. If he was friends with Mark. He would always wonder if Mark was hitting on her. No he couldn't make up with his friend.

"Give it some time. Don't throw away the friendship." she hoped they would make up.

"I'll give it some time"

"Thank you"

"I would do anything for you. Why don't we go to the trailer. Spend the night together." he wanted to hold her in his arms.