MY BEST FRIEND

The song belongs to Tim McGraw. It's called My Best Friend.

The Characters belong to ABC and Shonda...too bad for me, but great for her.

A/N: Please be kind...This is my first venture into McStizzie Fic, so any constructive criticism is appreciated.

A/N 2: I would like to thank Lilly, Monica, Meredith & Amanda who all offered to read this for me, so I wouldn't make a fool out of myself (ha-ha)

A/N 3: I am not sure on the timeline for any of the following facts in my story, so if I have it completely wrong, please correct me.

A/N 4: The first chapter is unbetaed, so the mistakes are all mine. I would like to give Monica credit though for helping me clean up some glaring grammatical errors. If it is difficult to read please let me know.

A/N 5: I'm not going to disregard Addison, but I felt it was important to establish Mark & Izzie first.

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He was sitting on a stool at the end of the bar at Joe's. He didn't know why he was here, just that he didn't want to be alone, and he really didn't have any friends. There was only Derek, he acknowledged ironically, but no matter how hard he tried he couldn't get Derek to forgive him. He hated this day, he mused swirling the amber liquid that was in his glass, and realized he didn't even want to be here. His thoughts kept drifting back to Dr. Isobel Stevens. She looked so lost and alone when he saw her at the hospital earlier. All he wanted to do was reach out and hold her hand. UGH! He shook his head violently. She is the last thing that he should be thinking about. He got up and whirled around. He wasn't watching where he was going at all, and he slammed into Izzie Stevens herself, much to his chagrin.

Izzie for her part was not watching where she was going. She had just had the worst day she could possibly have. Her daughter did not want to see her, and George had rejected her for Callie. All she wanted to do was get drunk and forget. That however, was not in the cards; as she plowed through the crowd she was struck by Mark Sloan, the most egotistical attending of them all. Under normal circumstances she would have been able to avoid him, but there was nowhere for her to move.

He slammed into her with a loud thud, and she went flying backward into the nearest table. Her head struck the table and she slowly slumped to the floor. Mark tried to grab her, but just missed her. When she landed on the floor he flew into Dr mode.

"Joe, call 911, and please everyone move out of the way!"

Joe was stunned into shocked immobility. Irritated Mark scooped Izzie up; careful to keep her head still, and headed out the door and across the street to the hospital.

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"Get a gurney, and page Derek" he told Mirada Bailey as he rushed through the doors. She started to stir, and he was afraid she would cause further damage, so he gently placed her on a gurney, and held her hand to calm her down.

"Please don't move Stevens, you were knocked out at Joe's Bar, and you might have a concussion." He stated reasonably.

"Who knocked me out?" she wondered.

"I did" he said apologetically, He hadn't intended for her to get hurt. He just wanted to get out of there.

"Oh, Okay." She said. She didn't want to push the topic because he truly did look remorseful so she let it be.

Bailey returned a few minutes later with Derek in tow.

"What did you do to her?" he asked with amusement in his voice.

"Nothing, he didn't do anything." Izzie stated, narrowing her eyes at Derek. "I wasn't watching where I was going and fell at the Bar. I guess I fell, and hit my head, and was knocked unconscious. Luckily Mark was there and had the presence of mind to bring me here!" she finished emphatically. Oh My God! I just defended Mark 'McSteamy' Sloan. Why did I do that? Maybe I hit my head harder than I thought.

Mark just stood there gaping at her. Why had she just defended him? More to the point, why had he let her?

"I want to get a head CT, and see if she has a concussion." Derek stated, breaking into Mark's thoughts.

He let go of her hand, and was left alone with Bailey. A prospect which did not thrill him, but he was not leaving her alone. Whoa, where had that come from? Luckily, I didn't say that out loud.

"Oh, you said that out loud all right," Bailey chuckled out, "You could do worse."

"What do you mean?" He wondered, he had the right know. It was his life they were discussing right?

"You know exactly what I mean Sloan, if she meant nothing to you; you wouldn't have hauled her and your sorry butt over here. You wouldn't have stayed." Said Bailey incredulously. She was after all stating the obvious.

"I am a doctor, I was only doing my job." Mark said weakly.

"Its okay, she was bound to go one of these days." She stated. "All of my interns are hooking up with Attendings. The odds were stacked against her."

"We are not hooking up! Isobel Stevens would not 'hook up' he stated angrily. Angry at her, that she would think that about Isobel, and angry at himself that he felt that way.

"You see that?" she stated waving her hands between them."That right there is why I know that you care for her. You're right Izzie Stevens does not 'hook up' She's too good for that. I am going to give you a piece of advice Mark." She looked to him for confirmation that she should continue. He simply nodded his head, so she continued.

"Don't be afraid of what she has to offer. She is the real thing. She is honest, emotional, and she doesn't take any crap. She is perfect for you." She paused to take a breath.

"That being said, she has been through a lot, more than any one person should have to go through at her age, and if you hurt her, I will hurt you!" She put emphasis on that last statement, and turned and left.

Mark was stunned to say the least. Was everything she said true? Could he have feelings for Dr.Isobel Stevens? Before he got the chance to answer those questions, Derek and Izzie came back into the room.

"She's got a minor Concussion. I'd like to keep in her in overnight, but she is being obstinate." Derek stated.
He noticed for the first time that Izzie had a cute little pout on her face, and her arms crossed over her chest. She was almost daring him to contradict her.

"She could come home with me." He said confidently, as if this was the obvious solution. Both of the room's occupants just stared at him in utter shock and disbelief...

TBC

A/N Please be kind. I will be getting into more Mark/Izzie stuff in the next chapter, but I thought it was important to have Mark have that moment with Bailey. I love her character too. Let me know what you think!!!!!!

A/N 2 I know I am a little mean giving you a cliff hanger and all. But Please don't kill me. I'll try to update soon. I never have gotten any reviews since this story is my first. Please be generous.