It had been a day like any other at Seattle Grace - Mercy West Hospital when Dr. Callie Torres pulled the beeping pager from the waistband of her scrubs and squinted at the display.

Our spot. 5 Mins xx 3 A

The orthopedic surgeon smiled and shook her head slightly. Ever since she had confessed to Arizona about her past as a basement dwelling loner, the blonde had been dragging her down to the old cot that was still tucked away in the corner of the pipe room every spare moment they had. Sometimes they talked, sometimes they ate, sometimes they just lay and held each other. Most of the time though, Callie would arrive down to find her girlfriend bouncing impatiently on the bed with eyes burning so full of lust, they almost scorched Callie's very soul.

Holding that thought in her mind, she shouldered open the heavy metal door only to stop dead in her tracks. Sitting cross legged on the ground in front of her leaning with her back to the wall was a young girl so deep in thought that she never heard the door open. Callie frowned and cleared her throat, finally catching the stranger's attention. The girl's head snapped around in surprise.

"Oh! Hi! Sorry, I didn't expect to see anyone else down here." She stammered.

"Yeah...well..this is kinda my spot...." Callie hinted. The girl gave her a once over, taking in the lab jacket and scrubs.

"You work here?" She inquired, her head tilted. Something about the gesture tugged at the back of Callie's mind.

"I do. I'm a surgeon."

"Ok well then you must know of a million other places in this hospital to hide away and sulk in. I got here first." The girl finished, a hint of defiance in her voice. Callie frowned. This was not how she had planned on spending her break. She was supposed to be wrapped around her smoking hot girlfriend and building up a sweat right about now, not starting a turf war with some random, smart mouthed college kid. Her train of thought was interrupted by the arrival of Arizona.

"Hey! Sorry after I paged you I got cornered by one of Yang's interns who..." Arizona's rambling trailed off as she became aware of the third presence in the room and the apparent battle of wills that was being waged between her girlfriend and the stranger. She was about to ask what was going on when her jaw literally hit the ground. "Casey?!" she stuttered in disbelief.

The girl's head whipped around and Callie watched in disbelief and a whole lot of confusion as the stranger, who was apparently called Casey and apparently knew Arizona, jumped up and wrapped the blonde in a bone crushing bearhug.

"Oh my God!! ZoZo!" She squealed. The two stayed in a tight embrace for what seemed like an eternity before breaking apart so could Arizona hold Casey at arms length and look her over.

"I can't believe it's really you! What are you doing here?!" Arizona questioned, all the while alternating between squeezing Casey's shoulders and shaking the girl excitedly. Callie blinked a few times to keep her eyes from falling out of their sockets and rolling around on the dirty concrete floor. She had no idea what was going on and no one seemed to have any inclination to fill her in. In fact, it was as if both Arizona and the brat had completely forgotten she was there. And what kind of lame-ass nickname was ZoZo? And why did Arizona allow herself to be called that?

She turned her attention back to the girl who was rambling about visiting a friend who had fallen down some stairs after a few too many drinks at a party. The girl's eyes were darting nervously around the pump room, her head alternately tilting and bobbing as she answered Arizona's questions. Callie's eyes narrowed- the mannerisms, the gestures - they were all stomach-droppingly familiar. She was about to interrupt the reunion with some questions of her own when the shrill noise of a beeper cut through the air. A soft curse from Arizona revealed it was her who had been paged.

"It's a 911 from Bailey, I really have to go." She apologised to Casey before turning to Callie. "Calliope here can show you up to the Attending's lounge. Please, please don't go anywhere before we've had a chance to catch up?" she begged. Callie raised her eyebrows, not appreciating being completely ignored only to be roped into playing tour guide and babysitter without any explanation as to who this person was or how she was connected to Arizona. She was all set to object when the blonde surgeon directed the full force of her puppy dog eyes her way. Callie's shoulder's dropped in defeat- there was no way she could refuse her girlfriend anything when confronted with those baby blues. Arizona flashed her a quick dimpley smile, gave Casey one last quick squeeze and disappeared down the corridor to the elevator.

Callie sighed in annoyance and frustration and couldn't help glaring at her charge. For her part Casey had the good grace to look sheepish and did her best to avoid the angry surgeon's eyes, turning her head deflect the worst of it. It was then that she saw the cot tucked away in the corner of the room and the proverbial light bulb went off.

"You're Arizona's girlfriend?" she smirked. Callie glared harder, crossed her arms and tossed her hair back over her shoulder. "Ok Xena, I'll take that as a yes. Before you rip my head off for interrupting your sexy time" Casey continued, jerking her thump in the direction of the cot, "just remember, it wasn't me who paged her. I believe it was someone called Bailey you should be directing your anger at. You can show me this Attending lounge on the way..." she finished and strolled past the now fuming Callie. I took all of Callie's maturity not to stamp her foot in frustration. Settling for an eye roll and a string of muttered curses instead, she followed after the newly crowned bane of her life.