Arizona had spent the past three days since her brainstorming session with Callie going over the procedure with Derek and then with Hayley who seemed genuinely impressed. Once she had gotten the nod of approval from them both she proceeded to go over the procedure in depth with Alex and Cristina. Alex would soon be starting his PEDS fellowship if all went well and Cristina Yang was one of the best surgeons Arizona had even seen so it really wouldn't hurt to have her around. Arizona hadn't really planned on having anyone except Alex with her when she performed the surgery but Sarah had been presenting with a slight arrhythmia in the last day or so. The Paediatric surgeon had initially intended to ask Teddy to sit in on her surgery to keep an eye on the mother's heart but since Cristina had walked up to her and asked to be present for the procedure she thought she might as well kill two birds with one stone by allowing Cristina to witness a groundbreaking surgery whilst having a capable heart surgeon present for the sake of the patient.

Cristina technically wasn't a cardio thoracic surgeon since she had yet to actually start her fellowship and yet Arizona felt that she was enough of a heart surgeon for this situation.

"Then we tie off the trachea right?" Alex questioned as they went through the procedure for the umpteenth time this evening. Arizona appreciated how thorough Alex was, he was generally quite an arrogant surgeon but he knew his limitations and it surprised Arizona when he had asked her to go through the procedure with him at home.

"And this causes the lungs to begin to fill normally with fluid, forcing the intruding organs back into the abdominal space. We've been over this twenty million times already. What are you? Dense or something?" Cristina had over heard them talking about going over the procedure again and had invited herself over to join them. It seemed though that she was getting frustrated with the way in which Alex and Arizona insisted going over every detail with a fine tooth comb. She was definitely a little more a by the seat of your pants type surgeon.

"You are both correct and once the baby is born we'll be able to repair the hernia fully" Arizona was grinning at the two Residents proudly. She had found in recent time that although she loved surgery and the knowledge that she and her scalpel could save a life, she found teaching gifted young surgeons to be just as rewarding.

"Great. Now who's going to try and beat me at this game?" Mark called out from his usual seat on the lounge. Arizona was beginning to wonder whether Mark had actually moved in to her house. If he kept showing up like this she was going to start asking him to pay rent.

Arizona had been spending a lot of time with Alex, Mark and Cristina. It certainly made for an unusual foursome but somehow it worked for them. Mark found himself hanging out at Arizona's place more and more often due to the fact that Callie was usually busy spending time with Hayley when she wasn't working on her cartilage research. Cristina had also in recent times taken to showing up randomly to 'hang out' probably due to the fact that Meredith and Derek were about to have a baby which limited Meredith's Tequila intake.

"You really are kind of a legend you know that Robbins?" Mark slapped her butt as she managed to squeeze onto the couch beside him

"This I know. But honestly I don't think I could have done it without Calliope's help" everyone always went a little silent whenever she mentioned Callie's name. She knew that none of them agreed with her decision to end things with her ex so they usually just didn't talk about it, it was the only way to avoid arguments. An awkward silence fell over the group until Mark decided to break the silence.

"They're trying for a baby you know?" he blurted almost involuntarily. Arizona did her best not to react with horror. Maybe Mark was talking about someone else. Cristina's death glare and throwing of a pillow in his direction told the blonde that he was indeed not talking about someone else.

"Oh. Well that's good. Calliope's going to make a wonderful mother. I'm happy for her" Arizona turned her attention to the Wii remote that Alex had silently handed her.

"Oh that's right. You're all team HayCal now aren't you? Sorry I forgot" Mark was getting snappy with Arizona. He hated this whole situation. He hated that his best friend didn't have time for him anymore because her new girlfriend was always monopolising her and didn't like to share.

"Dude, did you seriously just say HayCal?" Alex gave Arizona a small nudge which caused a small smile to grace her lips.

"Shut up Karev.

"What Manwhore is trying to say is, if you had a choice you would definitely not be picking team HayCal. Admit it" Mark was pointing angrily at Alex almost willing him to agree with him.

"Exactly. Calzona all the way!" Mark threw his arm up in the air triumphantly and Cristina surprisingly was nodding at him with a serious look on her face. She was in complete agreement with Mark, which was within itself a huge accomplishment.

"Seriously Karev. No more fence sitting. HayCal babies or Calzona babies?" Mark was leaning forward to get a good look at Alex. Arizona couldn't believe these people, the people she called her friends were taking this conversation seriously.

"I would NOT babysit a HayCal baby. No way" Cristina stated seriously.

"Oh me neither. Would you babysit a Calzona baby?" Mark asked curiously.

"Sure. If it was sleeping, definitely" Cristina shrugged. Arizona was finding this conversation more and more laughable by the minute.

"I'd totally babysit a Calzona baby. How could anyone resist a curly haired, rollie shoed little rascal?" Arizona noticed the sparkle in Mark's eye and she found herself smiling at the image. That is until the image in her head starts crying and screaming in her direction "Mommy Mommy!". Arizona shuddered involuntarily but quickly shook the feeling off and turning her attention back to her ridiculous friends.

"I don't think you have anything to worry about. I doubt either of you would be enlisted for babysitting duties" Arizona didn't really believe this. She knows that Callie would trust both Cristina and Mark with her child if they were ever to offer to babysit.

"I'm with the crazies. Gun to my head, Calzona of HayCal? I go Calzona" Arizona was shocked by Alex's sudden input on the subject and gave him a wide-eyed glance but he simply shrugs his shoulders in response.

"See Zoney Bear? It's team Calzona all the way!" Mark said as her put his arm around her shoulders smugly.

"Firstly, NEVER call me that again. Secondly, you're all crazy"

The next day Arizona, Alex, Mark and Cristina all showed up to work together. All slightly hung over and none of them in a good mood. Mark had a sore neck from sleeping half the night on the couch; he also had a sore stomach from where Arizona had kneed him when he had climbed into bed with her. He wasn't trying to pull anything and she had allowed him to slide in with her under the strict conditions that he didn't as much as think about touching her. Unfortunately for him once he had fallen asleep he was unable to control his own actions and found himself snuggling up the blonde, she was quick to rectify this situation and had kneed him in the stomach causing him to fall out of the bed.

Arizona was in an overly cranky mood not only because she had a splitting headache caused by too much Tequila but also due to the fact that Mark was sleeping on her bedroom floor and his loud snoring hadn't allowed her to get any sleep.

Cristina wasn't necessarily any crankier than usual but she was dealing with a rather horrendous hangover and she was wearing a pair of Arizona's pants which were just a tad too tight. She had managed to spread herself out on the sofa bed that Arizona had made up for her in the lounge room so she had gotten a relatively good night's sleep.

Alex was also suffering from a major Tequila induced hangover which he was getting pretty used to these days so he much like Cristina wasn't much crankier than usual. The rushed morning and the fact that not only had he not gotten laid last night but he didn't get any breakfast because Arizona was too hung over to make him any. He hated to admit it but one of the main reasons he liked living with Arizona, aside from the fact that she was a walking medical encyclopaedia (not quite as accurate as Lexie but fairly impressive nonetheless) but she had taken to looking after him. She made his breakfast every morning, did his washing and changed his sheets once a week. They took turns in cooking dinner and she always made him stack the dishwasher and take the garbage out but all in all he had it pretty easy living with Arizona.

The four of them stood leaning against the nurses' station on the PEDs floor. Arizona, Alex and Cristina going over their notes for the surgery they had this afternoon and Mark who had realised that he wasn't actually working today.

"Good morning crew" the four of them turned to see an overly cheery Hayley Daniels walking towards them.

"I'm not in the mood for the gynie brigade. I'll be in on-call room 3" Alex made a swift exit.

"I think Teddy's calling me" Cristina followed closely after Alex leaving Arizona and Mark to greet Hayley as she stopped right in front of them.

"You look mighty cheery today Daniels" Mark was trying his best to act friendly. He didn't know why but he just couldn't warm up to the brunette. He knew she was a nice person and that she was in love with his best friend but if he were being honest he was still a little bitter about the ending of Calzona and he just could not find it in himself to root for HayCal no matter how much he tried.

"Well it's a beautiful day Dr. Sloane" that was another thing that irked him about her. She was always so formal with him. He was her fiancé's best friend and yet she never treated him as anything more than a colleague. She was friendly with him and was always good natured when it came to his inappropriate jokes but it wasn't the same. Right from the beginning Arizona had either called him Mark or Sloane and on the odd occasion she had affectionately called him Manwhore. She would kick him under the table when he managed to open his big fat mouth at an inopportune time. She treated him like he was part of it, he wasn't sure exactly what 'IT' was but he had felt included.

"You like the rain?" Arizona questions curiously. It was miserable outside so it seemed odd that someone would say it was a beautiful day.

"Yeah Daniels, I wouldn't have pegged you for the rainy weather type" Mark teased her and as he looked to his right he noticed a small grin appear on Arizona's face.

"Since when is the weather the only reason to call a day beautiful?" it seemed like there was nothing Mark could say to bring her down from her high. She was undeniably on cloud nine.

"Right you are Daniels, right you are"

"Oh Arizona, you don't need me for the surgery this afternoon do you?" Hayley had turned her attention to the Head of Paediatrics. Her tone was much less formal when she was speaking to the blonde than it was when directed at Mark.

"Uh I suppose so. I've asked Dr. Karev and Dr. Yang to assist so I think I have it under control" Arizona smiled at her brightly although she was a little confused as to why the Obstetrician wouldn't want to be present for the surgery.

"You got something better to do Daniels?" Mark asked jokingly. He assumed she had a surgery and he was just trying to see if he could rile her up. He was unsuccessful.

"As a matter of fact I do Dr. Sloane" she was almost jumping out of her skin with excitement. Even Arizona the Queen of perkiness seemed a little creeped out by the brunette's level of cheer.

"What could be better than witnessing a groundbreaking surgery that's guaranteed to save the life of a tiny human?" Mark asked as he nudged Arizona causing her to grin like an idiot.

"Well actually, Callie and I have our first appointment at the fertility clinic this afternoon" and that was all it took to swipe the smile off of both Arizona and Mark's faces.