Disclaimer: I do not own Grey's Anatomy, they belong to Shona Rhimes.

Mark Sloan stalked down the hallway of Seattle Grace looking for one person, and one person only. He by passed all the nurses as they all tried to get his attention. Even when Derek tired to ask him for a consult, Mark simply raise his hand and continued on his way. Only when he spotted the raven black hair that he had been searching for, Mark slowed down his strut, and came to stand next to her at the nurse's station. He stood at her side, completely unnoticed by her, he waited for her to acknowledge him, when she didn't he leaned over and spoke in a whisper.

"Callie, I need a favor" Callie jumped at the unexpected voice and turned her head to look at him.

She smiled when she recognized who it was, "What?" she asked, not completely catching his first question. Mark groaned and leaned closer to her.

"I need a favor" Callie looked at him skeptically, and a little afraid to respond.

"With...?" Mark didn't answer right away, he shifted his weight from one foot to the other and ran his hand through his hair.

"My family is having a reunion next week, and I need you to come with me" he said quickly. Callie stood with a slack jaw as she tried to process Mark's words. She was also confused as to why he was asking her instead of his girlfriend, Lexie.

"Wait, what?" Mark groaned at the thought of repeating himself again.

"I Need You To Come Home With Me" He spoke to her as if she was a child and tired to laugh it off when he caught her glare.

"Why? Why aren't you taking Lexie?" Mark averted his gaze to anywhere other than her eyes trying to stall answering as long as possible.

"Lexie and I broke up" he said softly looking down at the floor. Callie immediately softened at his tone, but was still confused as to why he needed her there.

"Oh, I'm sorry, Mark I didn't know, we haven't really talked in a while" she said with a hint of bitterness in her voice. What she said was true, over the past few months while Mark was with Lexie, he had completely forgot about his best friend and left her alone to be with his girlfriend.

"I'm sorry I haven't been around, Callie" she shrugged her shoulders and turned back to the desk.

"So, tell me about this reunion, why don't you just tell your parents you and Lexie broke up, wouldn't it be easier?" Mark let a humorless chuckle.

"No, no way it would be easier, they would constantly put me down about not being able to keep another relationship." Callie nodded.

"Plus, Addison and Meredith will be there and so will Derek, he's really close with my family and so was Addison when they were married, so they invited them too." Mark told her this hoping that it would get her to crack.

"I don't know, Mark, what would I be going as, your friend, your fake date, what?" Mark shifted to lean across the desk and pushed her bangs out of her face.

"You'd be going as my best friend, Cal" Callie looked up at him, his blue eyes pleading with hers, the look that she could never say no to. Damn! I hate it when he does that!

Callie pursed her lips and thought about it. It wouldn't be that bad, a couple of days with his family, plus I would get to see Addie, maybe it would be okay.

She turned back to Mark and sighed heavily,

"Fine, I'll go" Mark beamed at her pulling her into a big hug, lifting her off her feet.

Wrapping her arms around him, she relished in the feel of his embrace. It had been forever since his arms had been around her. Finally setting her on her feet, Mark held her at arm's length.

"Thank you, you really are the best friend ever"

"You better believe it." She smirked as Mark shook his head and chuckled. He was the best friend ever too.