A/N: A one shot about Mark/Addison.

The fluff is invading because this really has no point, it just popped in my head one day.

Review after you read it and i'll send you Juju.

Disclaimer: I do not own Grey's Anatomy or Private Practice if I did Meredith and Derek would never get togeheter again.


Derek yawned as he made his way to a on call room. He, Mark and Addison was the on call Attending's for this 48-hour shift. Addison had crashed in a on call room about an hour ago and he had now idea where Mark was, frankly he didn't care about Mark, all he wanted was to get home to Meredith. It was dark in the on call room he entered and he guessed some other doctors was sleeping as well, it wasn't until he had laid his head onto the pillow on one of the top beds, he saw the unmistakeable red hair spread all over the pillow in the bed across the room. She was beautiful, he silently thought to himself, Addison looked vulnerable as she slept but still looked like that women he had married a decade ago that wouldn't take crap from anyone. Different from popular believe he had actually noticed the change in Addison's demeanour and behaviour, He also knew he was mostly responsible for that. He saw that she often hesitated when doing things, she rambled and fiddle with things, for people that didn't knew Addison like he did, or had done it all seemed normal but it wasn't. The Addison Montgomery he had known never ever hesitated or fiddle with thing, she never showed her weakness to anyone, besides him, but it seemed like apart of Addison disappeared with the 'Shepherd'. Derek had broke Addison and made her that person, if he would do it all over again, he would fight for her back in New York but he couldn't reverse time and he was happy with Meredith, he just hoped someone could undo the damage he had caused Addison. Minutes later Derek drifted away to sleep.

Derek awoke when he heard the door squeak, he slowly lifted his head and saw Mark making his way to Addison's bed. Derek considered walk out but something in him told him to stay. He saw as Mark kneeled down beside Addison, tapping her on the nose and stroking her hair, Mark whispered something in her ear that Derek couldn't make out. Addison slowly started to wake up, she looked into Mark's grey eyes and smiled a tired smile. If Derek hadn't known better he would think Mark and Addison was together, he had overheard Addison saying something about Mark never was going to be good for anything but sex. He felt almost felt guilty for eavesdropping on a conversation that seemed private but then again, they couldn't just expected the on call room to be completely empty, in fact he was almost sure there was someone sleeping beneath him. Mark kissed Addison passionate on the mouth, making Derek think that if they where going to go at it he would leave immediately, then Mark looked at her and started talking.

"So how's my favourite girl?" Addison leaned into another kissed

"She is fine but tired" Addison held her hand over her mouth as she yawned

"You need to take it easy, you remember what the doctor said right" Addison tucked at Mark's scrub top

"Sleep with me" Mark chuckled at her and kissed her forehead and then joined her in the bed and crawled over her, he had his back against the wall and his arms draped over her waist, with one hand intertwined with Addison, was resting on her stomach. He softly kissed her neck and then buried his head in the crook between her neck and shoulders. Derek was very much confused by this display of affection, if they where just sleeping with each other, why where they this cuddly. He looked at them and something in his head just clicked, and that something somehow made him a bit jealous, it was great that Addison was happy but not with Mark.

"So how's my other girl doing" Mark whispered to Addison but load enough for Derek to hear it, that statement just confirmed what Derek already had figured out

"She is doing fine, you know in about 2 weeks I will be able to feel her" Mark caressed the bump that was hiding beneath scrubs two sizes too big and he whispered something in Addison's ear that Derek couldn't make out, not long after both of them had drifted of to sleep. Derek kept observing them, they seemed happy and content with the life they shared with each other. Deep inside him he was actually happy for the two people that he once considered family but he also felt a sting of jealousy, he had never imagined Addison caring anyone's child except his. Mark had been the last person he expected to have a kid, but they where happy. They where happy and in the end of they day that was all he really wanted.