Disclaimer: Belongs to Shonda Rhimes.

Waking up the next morning in Mark's apartment, Callie groans at the pounding that is reverberating through her head. Deciding that her alcohol consumption the previous night may have been too high, Callie stumbles to her feet knowing that she needs to get ready for her shift. Mark's couch is uncomfortable but she was in no condition to drive back to the Grey house, so settled for here. Leaving the apartment, she stumbles upon the unexpected scene of Arizona moving back into their old apartment.

'What are you doing?'

'I'm moving back in to our apartment' Arizona replies putting emphasis on the word 'our'. 'I bought out our subletters and I've pulled all our stuff out of storage.' Arizona adds in her chirpy voice.

'Let me re-phrase, what are you doing moving into my apartment.' Callie responds as she decides two can play the game as she puts emphasis on the word 'my'. A flash of doubt passes across Arizona's face, but she pushes on with her plan to force Callie to confront her.

'Look Calliope…' Arizona begins to speak but is again cut off by Callie.

'No you look, my lack of interest in seeing you is not a strategy. I'm not playing hard to get. I don't want to see you because I turned my life upside down for you and you walked away because for a week I was cranky. You're untrustworthy, so I don't want to see you. You're self-centred, so I don't want to see you. I am a hundred percent certain that if I let you back in my life again you will hurt me again, so I don't want to see you. This isn't a ploy. I'm not pouting. I don't want you in my life. Get your crap out of my apartment.'

And as Arizona predicted, Callie ends the conversion and stormed off leaving the perplexed blonde behind. Callie's insistence of not letting her talk is starting to wear thin. Deciding a different strategy is required; Arizona considers her next course of action. Before her mind has time to consider the situation, Lexie and Mark leave their apartment and observe the blonde. Realising they heard Callie's rant; Arizona begins a conversation 'The fact she is yelling is a good thing, as that means that she cares. Right?'

Lexie isn't convinced about Arizona's argument but realising the blonde is clutching at straws agrees with her sentiments. Mark simply stares at both women as if they've got insane as that's not how he interpreted Callie's rant. Her meaning was pretty clear, well he thinks so anyway and it has nothing to do with caring.

XXX

Much to Arizona's annoyance, she is assigned a case with Mark. With Stark being the Head of Ped's, she gets given the cases he has no interest in. In comparison, Mark finds the situation exhilarating, he loves to gossip and point out Arizona's faults. As she's desperate, Arizona listens as Mark tells her Callie believes that Arizona is a bailer. When things get hard, the blonde shuts down and pushes Callie away. Mark goes on to explain that the baby issue is a prime example of this, which Callie and Arizona never really talked about the issue but gave up and broke up. Having analysed her relationship with Callie since she left her, Arizona is strangely thankful to Mark for a second opinion. Arizona assumes that since Mark and Callie are best friends, he would have a better understanding of what is going on in the head of the fiery Latina.

As Arizona takes Mark's words on-bored, she begins to plan her next speech to Callie. She didn't come all this way to not get the results she so desperately wants.

XXX

As Callie's shift ends, she catches the elevator down to the lobby. Shunning company, she turned down drinks at Joe's and is planning to head back to the Grey house and attempt to sleep. Deep down she knows she'll spend all night trying to work out a solution to the dilemma she finds herself in. Opening on the ped's floor, Arizona steps into the elevator, her eyes widening in glee as she spots the object of her affection. As Callie is some-what trapped in the elevator with her, Arizona decides that this is a suitable place to put Mark's help to the test.

'I bail, when things get hard I bail. As Mark pointed out, I run away from you, I shut down…'

'Look Arizona, bailing isn't your weakness and frankly the fact you asked Mark Sloan for help shows how pathetic you are acting at the moment. This isn't you.' Seeing the look of surprise on Arizona's face, Callie continues, 'You don't listen, you never listen. You have your opinions and ideas of how we should go, how this relationship should go.' Callie says as she gestures between the two of them. 'It's like I'm a bystander in my own relationship. I know I'm not innocent in this regard, but you, you take the cake.' Finally, Callie decides to bite the bullet and tell the truth. 'But that's not really the issue here, I did something because I was hurt and I need to tell you.' Arizona is bending over backwards to fix a relationship that in unsalvageable – and it wasn't the blonde that destroyed it

'What did you…, no please tell me that you didn't' Arizona asks as realisation dawns on her of the one thing that Callie could have done that could invoke such a pained look on the brunette's face. 'Please tell me you didn't sleep with Mark Sloan' she spits out, praying that her worst fears aren't confirmed her hands clenched at her side.

Weakly, Callie mutters the dreaded word 'Yes, but I didn't think I was going to see you again. I wanted to be with you, but you left me in an airport…' Callie says as she attempts to explain her behaviour.

'So you jumped in bed with Mark Sloan, the one person I always feared you would leave me for. Did you even wait for my plane to take off before you ran back to him, telling a sob story how I broke you? Oh man, here I was pouring my heart out to you, when you never wanted to be with me.'

As Arizona ends her accusation, the elevator doors open and she storms off leaving Callie trailing in her wake. Coming the other way, Lexie and Mark are walking hand in hand. 'You two kissed and made up. I beat you two bumped uglies in the elevator didn't you?' Mark, smirking at what he assumes is a funny comment and he imagines the two of them together. He is oblivious to the dark look on Arizona's face and the tense look on Callie's as she frantically signals to him to shut up.

'You slept with her, you stood next to me and tried to fix my relationship, pointing out my faults! When you were sleeping with her and the biggest fault of all. Were you to together before I left, laughing at me behind my back?' Arizona yells as she stalks towards Mark. Arizona is blinded by rage at the fact she poured her heart out to Callie in an attempt to fix the relationship that she believed she had ruined. Now that the truth had been told, she realised that all of what had been said may have always been fruitless. Callie had moved on, with Mark Sloan no less.

Mark turns to face Callie, 'You told her, we had an agreement. What the fuck is wrong with you?' As Mark's attention is focussed on yelling at Callie, he is oblivious to Arizona's fist approaching his face. Connecting strongly, Mark stumbles back as Arizona continues to yell profanities at Mark. Then whirling around to Callie, Arizona pokes Callie and says the three dreaded words, 'We are over.' For the first time since she's been back, Arizona ends the conversation on her terms and storms off, leaving three shell-shocked surgeons behind.

Lexie, a bystander in the conversation thus far pipes up 'You two slept together, when?' Mark decides to go into damage control of his own relationship and attempts to explain their behaviour.

'It was before we got together. I would never cheat on you Lex. It meant nothing, we were just trying to comfort each other because the love of our lives left us. Cal and I decided not to tell you guys because it meant nothing. I mean the sex was terrible, and for me to say that, it was really bad' Mark says as he tries to make light of the situation.

'Hey, I told you to tell her. Don't drag me into this mess. I wanted you tell the truth' Callie interjects.

It finally dawns on Lexie what has actually happened and repeats what Arizona had already said in terms on her own relationship and follows her out of the hospital, not looking back. Thus leaves Callie and Mark warily watching each other.

'This is your fault. If you could have just kept your mouth shut, we wouldn't be in this situation. What the hell were you thinking Torres?' Mark says as he accuses her of ending his relationship with Lexie.

'Shut up Mark, I don't know how you could sleep next to Little Grey without telling the truth. So just shut up. Sometimes, you disgust me.' Being thoroughly pissed off at Mark, Callie leaves him standing in the corridor.

XXX

Days past and turn into a week and Callie's attempts to talk to Arizona are met with ignoring and hostile stares and they're just the times she manages to track the blonde down. Karev and Altman have taken to warning Arizona when Callie is approaching and running interference. Arizona has developed ninja skills to evade her, using her heelies for maximum advantage. Being on the other end of the stick, Callie realises how childish she was being in regards to the return of Arizona. She and Lexie have been spending time together after Callie assured her that she had no romantic feelings towards Mark. Lexie seems to have found comfort anyway, in the arms of Avery. Mark continues to follow Lexie around like a lost puppy and sprouts marriage proposals and other romantic gestures. Mark was never the sharpest when it comes to relationships. And when he's not doing that, he's glaring at Callie as he believes he has done nothing wrong.

And she has a bigger issue at the moment; she fears that she may be pregnant. Realising that this could be an even worse situation, Callie decides it is time to find out.

Sliding up to Meredith, Callie whispers 'I'm late.' As Meredith and Derek are still trying to fall pregnant, Callie figures she'd have some knowledge about what to do.

'Well, you had better get a move on. Where are you supposed to be anyway?' Meredith responds completely misunderstanding Callie's angle with that statement.

'No, I'm late late' Realisation dawns on Meredith's face as she comprehends what Callie is getting at.

'Oh, not you too?'

'What do you mean, me too? Who else is late?'

'Christina, she's freaking out thinking she may be having a little Owen. I want to know how everyone who doesn't want kids can possibly be pregnant while I continue to have a hostile uterus. I mean, you guys are doctors, how can you have unplanned pregnancies? Safe sex people!' Meredith replies as she rants about this situation while Callie frantically tries to get her to keep her voice down. The last thing Callie needs for the nurses to know is that she is pregnant. Finally calming down, Meredith adds 'Christina went to steal some pregnancy tests from the clinic. We may as well move this party to the bathroom – we can have a pregnancy test party.'

Entering the resident's locker, they spot Little Grey. 'Ah, Lexie, we need you for a couple of minutes.' Deciding that Lexie needs to know the truth, Callie adds.

'I may be pregnant because I'm ridiculously late.' The colour drains from Little Grey's face. Lexie knows that Callie wishes she had never slept with Mark and doesn't rant or rave when Callie shares this news. She's spent the last several nights listening to Callie talk about her relationship with blonde and discussing strategies to get her back.

'Pregnant from Mark?' she ask in a questioning tone to which Callie just nods her head and Meredith responds with 'Well it sure isn't an immaculate conception.'

Christina enters the bathroom, with a bag of tests under her arm. 'What are you two doing here?' she asks Callie and Lexie.

Meredith responds 'Control and late' as she points to the other two women respectively. Entering the cubicles with the tests, each women completes the test and leaves them sitting on the counter as they wait for the allocated time to pass. No one talks as they all secretly pray for a result that will lift a weight off their shoulder.

'Alright, that's time' Meredith says, breaking the silence. As they turn over the tests, they each glance at each other's with one shining through with the words 'pregnant.'

A/N: I apologise for the time jump in this chapter, It was initially its own chapter but was too short. Let's just say its creative license.