That night was one of her lowest moments and she'll regret it until the day she dies, but now she has to face the consequence.

It was her, mark, bailey, and teddy. It was a bad night for everyone; Teddy with her blind date, bailey with her guilty conscience, and Callie with the Arizona weight on her shoulders. Everyone seemed to be having a bad week, but instead of dealing with their problems they drowned themselves in alcohol.

When Mark and Callie had finally arrived back at Marks house they were both a little tipsy. Callie had fallen asleep right away on the couch with Mark in the room beside her. During the short period of time Callie was asleep she had had a nightmare of being abandoned by everyone who she loved. Arizona had left her for little kids in Africa while Mark had left so he could be with Lexie, the one he loved so dearly.

Callie awoke with sweat beads all over her body from the fear that the dream she just had was completely true. As she realized it was just a dream she turned towards the kitchen to see who was making so much noise. Luckily she saw Mark standing there drinking water in just a pair of old sweat pants. Callie hoped that what she was about to ask Mark wouldn't be too awkward for the both of them.

After reassuring herself multiple times she wandered into the kitchen to find Mark turning to face her.

"Oh, I was just thirsty. I didn't wake you did I?"

"No," Callie said with a deep sigh, "I was…awake."

"Water," Mark asks with a grin that could make any girl melt into a puddle.

As Callie stood there contemplating what she was about to do she said, "I want…sorbet."

"Sweet tooth? I think I have some cookies around here somewhere."

She was completely embarrassed that she had to ask her best guy friend to do something like this, but she needed this more than anything right now.

"Mark," is all Callie had to say for him to finally realize what she was asking of him.

"Oh," is all he could seem to say. With a confused look he asked, "Really?"

With pleading eyes Callie mutters the only word she can say, "Really."

There is a split second of hesitation where both of them are asking themselves if they really want to do this.

Before either one can change their mind they are kissing each other passionately, hands running all over the other person. In a matter of seconds Callie took off her shirt, with the help of Mark, and was now reaching for her pants. Mark quickly pushed down Callie's skirt in an effort to get his hands where he wanted them. While Mark was working on taking his pants off Callie quickly leaned up and whispered in his ear,

"Bedroom…now."

As quickly as it had started it ended.

Even though she wanted it, Callie still felt guilty about what she had done. She loved Arizona more that anyone knew, yet she slept with Mark. As she lay there thinking about what she had just done she couldn't help but think of Arizona. If she ever found out what had happened that night Arizona would never forgive Callie.

This thought made Callie even madder. Arizona had left Callie not the other way around. Callie was a big girl and she could do whatever she wanted. With that thought on her mind Callie fell asleep lying next to the only person she could trust.

As they both woke up the next morning, Mark thought it might be a little awkward since they hadn't really had sex since Arizona and Callie started dating. To his surprise nothing was different. They got up and Mark suggested a shower for a wake-up call and much to his surprise Callie agreed.