A/N: I've decided to make a story that's been in my head for a long time now. I hope you enjoy the first chapter. Also, chapters WILL get longer. Please R and R..

Summary: Completely AU. After a long time of confusion and wanting, you get what you want and find the one you love. You marry that person right? What happens when you forget the last five years of your life before you get to? McStizzie.

X-x-x-X--Xx-x-x-x-x-x-xXXXXXXXx-x-x-x-x-x-xX--X-x-x-X

She literally dropped the phone from her hands as she heard the words come from the other end. She covered her mouth, grabbed her purse and ran out of her house, leaving the phone on the ground of her small home.

It hit him. A car had hit his. He was in the hospital. The man she was suppose to marry was in the hospital. What if he wasn't okay? She wouldn't be able to breathe. She wouldn't be able to live. He was her other half. He became her other half. She loved him, and she couldn't loose him.

She parked her car in the hospital parking lot. She opened the door quickly, and shut the door, not even bothering to lock it. She just wanted to see him. She just wanted to see his face, hold his hand, be right there next to him. She knew it would hurt, but she'd be there, and she'd be with him.

She ran in, her heart beating faster every moment that she wasn't with him. The nurse told her where to go. She ran again, she ran until her legs topped her in front of the threshold of the door of the room where the love of her life laid down. He looked peaceful, but that meant nothing.

She slowly walked in. She grabbed the chair that was against the wall, not moving her eyes away from him. She brought it over to his bedside. She sat on it, dropping her purse to the floor. She put her hands in his hand nearest to her. "Mark, please don't leave me…" She whispered, tears streaming down her face.

That brought her back to the first time she met him. She was applying for a job to an assistant, for him. She always had a crush, that's what she thought it was. He would let her call him by him first name. He bought her a birthday card the first two years she worked there. They didn't make much conversation, but it seemed as though he came to her desk a little to often to be getting messages.

When the third year came around, something shifted. She knew it was because she had finished what she needed at college to become a therapist. She had gotten the job to pay the last half of what she needed to do to become one at college. She took the night classes, after work. She had told him a few months before she left. They had seen each other at the local club, they talked for a little bit. That's when she told him.

The day she did leave, he gave her a very warm hug. It felt safe. It ended, their eyes locked, but only for a moment before she broke it.

She started her newest job not to far from the building where she worked at before. A month into the job, she was glad to what she wanted to do, but she did miss working for him… She missed him. He visited her, out of the blue. He came to see how everything was going. He joked about missing him, but she knew that a part of him was serious, so she told him a little bit. A silence filled the room, and then he said they should meet up for coffee. They did, two days later. They didn't talk much, but when they did, they learned more about each other.. That was the only day they talked outside of either's work place.

A week later, she opened her door, and there he was, standing at her front door. She let him in and he told her everything that he's been bottling up, about how he had fallen for her. He told her he knew that she would probably never feel the same, but she did, and she told him. She kissed him, and that started what would be a beautiful relationship.

Two years later, five months in the past of the present, he proposed to her. She said yes. They planned on marrying one month from now. One month of the day that he had gotten in a car accident.

She brought one hand up to put gently on his cheek. "I'd do anything to tell me that everything is going to be okay…" She used the hand that was on his cheek to put over her mouth to cover her sobs. "Anything to let you say my name again." She whispered, trying to contain herself, but it was no use. She couldn't control anything that was pouring out.

She put the hand back on his cheek. "Just wake up and call me Isobel, please…" She said pleading. She pleaded and cried before resting her forehead against his hand that was in hers.

He was the only one who did it. He was the only one who called her by her full name, everyone else would call her by her nickname, Izzie. He would be the only one. It made her feel like his. She knew he was always there when he called her that. Now he wasn't. Now he couldn't. It hurt her so much, not knowing he was going to be there, even if he was right there.

She knew she had to call their friends soon. More tears sprung to her eyes. This was to real, and all she wanted was this to be a nightmare she'll wake up from and have him next to her, alive and well and kissing her good morning. It wasn't in her imagination. This was real, and she couldn't stop any of it.

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Izzie was awakened the next morning by gentle taps on her shoulder. Her head was on her arm on the hospital bed. At first she was confused, but then her mind rewound to the night before. Her eyes filled with tears.

"Izzie." Her friend whispered down to her.

Izzie raised her head up, not taking her eyes away from Mark. "He got hit." She said in a barely audible whisper.

Her friend started to rub her back. "I know." She said softly, trying not to upset her more.

Izzie shook her head. "He got hit." She started to cry. "He got hit! He got hit Addy." She started to shake from her sobs. "He got hit."

Addison kneeled down, so she was closer height to where she was in the chair. She put her arms around Izzie, pulling her into a hug. "I know." She sighed. "I know."

Izzie continued to cry as her friend hugged her. She couldn't do this, she knew she couldn't, but she would be there for him no matter what happened.

Addison's eyes traveled to the man at the door. It was their other friend, and Mark's co-worker. Once she felt Izzie's sobs quiet down, she slowly let go of her. When she saw that her attention was back on the man she was engaged to, she stood up. She walked over to him. "Hey Derek."

"Hey." Derek said softly. He glanced over at Mark, and then looked back at Addison.

Addison looked with her eyes to the sides of him. "Where's Meredith?"

Derek sighed. "She's doing something for work out of the city. She said she'll be back in a couple of hours." He looked into the room quickly before looking back at her. "How is he?"

Addison shrugged looking back into the room. "I don't know. I just got here, but I'm guessing pretty bad." She turned back to him.

"How is she?" Derek asked referring to Izzie.

Addison sighed. "Not good." She told him honestly.

"Maybe we should leave Izzie to sit with him alone for awhile." Derek suggested softly. Even if he knew Izzie wasn't paying attention to them, he wanted to make sure.

Addison nodded. "Yeah." She sighed.

Addison and Derek both walked away from the room, not only concerned for their friend in the hospital bed, but the one who was next to him.

Izzie put her hands in his hand. She gently stroked the top of his hand with one of her thumb's. "Morning honey." She said softly, not bothering to wipe the wet tears on her cheeks.

The next hour passed by slowly for her. She would cry, she would wait, she would look at her engagement ring, and it was only one hour. She had hope, no, she wanted hope. It was just so hard to keep it knowing the one you love could die any minute of the day until he wakes. She wasn't making herself believe that he would never wake up, because he could, and she was holding onto knowing that.

Izzie was drawing invisible circles on his palm with her finger when she felt his hand move a little and the monitor start to beep. She stood up immediately. She stared at him intently as his eyes slowly opened, adjusting to the light in the room. She smiled, a genuine smile. She was awake, he was alive. She put her hands on his cheeks and leaned down. She kissed him sweet and lovingly.

When she parted from his lips to look at him, he gave her a look of pure confusion. "Who are you?" He asked trying to rack his brain to figure it out.

Izzie's eyes widened, and she looked at him in shock and confusion. He doesn't remember her?