I couldn't decide between two moments in this episode so I'm doing both, one is rather upsetting, the other is when they've made up!

Chuck versus The Crown Vic

(The argument)

The doorbell rang as Chuck was trying to unwind, with a regretful sigh he trudged towards the door and opened it. He was a little shocked to see Sarah walk in, looking angry and unamused.

"Are Ellie and Awesome home?" She queried as she pushed past him.

"No." He replied, rather bewildered. "They're at work.. And hello to you too."

Sarah felt the anger building inside her, she couldn't hold it in anymore. "What the hell happened today?"

"I - I, I don't know, I don't get it, I had a flash." He said. Please believe me.

She adopted a stony expression, clearly not buying a word of it. "Right when I went below deck with Kirk, it's pretty convenient timing, I would say."

He was getting more confused by the minute, how could she even doubt him? Why would he lie? "What are you talking about?" He asked.

"Just when you thought I was getting intimate with Kirk you decided to have a 'flash'." Her voice had risen by several decibels in the past few seconds.

He felt his heart drop, this couldn't be happening. He didn't want to argue with Sarah, we just wanted her to believe him. He wanted her to know that she was one of the most important people in his life and he wouldn't never even dream of lying to her.

"What exactly are you implying - that I faked a flash - that I'm a flash faker?" He bit back, hopelessly trying to defend himself.

"No I think that we need to discuss the fact that you let your emotions get in the way today." She said fiercely.

"My emotions?" His emotions? That was rich..

How should I put this? Sarah wondered doubtfully. "Things have been a little off since the incident, Chuck." She felt ashamed of herself calling it the incident, because it wasn't like that at all. In reality, it was something she could never refer to, but in her mind she could think about it as much as she wanted. The magical moment where the world around her stopped, that she came to her desires and let herself kiss him. Admittedly, the best moment of her life, if not the most passionate. She couldn't be truthful though, even though she could tell that she had stung him where it hurt.

"Really? And what incident are you referring to, Agent Walker? Huh?" She gazed at him, silently begging him not to say it. "Where you planted a kiss on me, right before a bomb was supposed to go off ending our lives? That same kiss right before your boyfriend Bryce came back from the dead, that same kiss?"

Chuck didn't hold back, he let himself spill everything out. He wanted answers, but it was clear he was getting nowhere. The feelings he felt obviously weren't returned due to the cold, hard stare she shot at him.

"Stop saying kiss! It happened, okay? What's done is done, can we just not talk about it, please?" She shouted, struggling to keep her emotional feelings inside.

"Okay, fine, absolutely. Will you just answer me one little thing-"

"Chuck I-"

"-Did you kiss me because you thought we were going to die and mine were the most convenient lips around, or was it actually about me?" He couldn't believe he had just said it. From the look on her face, he could tell that he wasn't going to get the answer he wanted.

Her expression softened for a moment, but then it changed. "What happened was a mistake." She snarled, pushing past him. "One I will not make again!"

She slammed the door behind her, leaving Chuck utterly speechless. He felt like his heart had broken in two and she'd taken off with the other piece. He couldn't believe she said it was a mistake, one of the happiest moments of his life… was a mistake! A sham! The fairytale land he'd been living in was crushed to smithereens and the more he thought about it, the heavier the impact had on him. He sat down and took a shaky breath.

It was moments like this that he needed his sister.

Why didn't he just go and speak to her? He didn't do it much anymore. He was pretty certain right now she was on a break, almost like he was being controlled by somebody else - he shakily pulled on his jacket and headed towards the hospital.

Sarah sat on the counter of Wienerlicious, swinging her legs like she didn't have a care in the world. Oh but she did. How could she have been so horrible to him? Speak to him like he was something on the back of his shoe? Guilt both surrounded and consumed her. She knew she had to keep her distance, yet she had never wanted to be so close to somebody.

It was pointless denying it anymore. In her imagination, she was already in his apartment. She was apologising to him, telling him that she didn't mean a word of it, their kiss wasn't a mistake - certainly not in her eyes anyway. And then she'd say, "If it was a mistake, would I be doing it again?" And she would take him in her arms and kiss him like there was no tomorrow.

Admittedly though, she had a mission today, so she would probably see him again and maybe, just maybe she might find the time to apologise. Well, she always had the time, it was just a matter of pride, she was terrified.

She wondered what he was doing now. Did he think, I can move on now. Was he wallowing in self pity wondering where it ever went wrong? Or was he regretting the fact that he had ever kissed her back?

Chuck sat in the waiting area of the hospital, nurses and doctors running past, barking orders at one another. He wriggled uncomfortably in his chair, he was nearly overwhelmed by the smell of disinfectant in the air and he wormed away from the people around him, covered in bandages and bloody wounds.

He saw Ellie emerge from the bathroom, cheering talking to the receptionist with her lunch in her hands, preparing to go to the canteen to meet her boyfriend.

"Ellie!" Chuck called softly.

She span around, searching for who had just called her name.

"Ellie!" He shouted again.

"Chuck!" She was shocked to find him here, had something bad happened?

"What are you doing here?" She asked curiously, slipping beside him. "Has something happened?"

"No, no.. I just wanted to talk to you about something." Chuck smiled uneasily.

"Oh, sure." She gestured for him to follow her as they walked into the canteen, sliding into an abandoned table in the corner. She looked at him, concerned, his face was pale and drawn, he also looked very confused and worried.

"What's up?" She prompted him, clearly it was something that was troubling him because he never came to the hospital to see her at work.

"How do you think Sarah feels about me, El?" He asked.

Hadn't they broken up? Ellie wondered to herself, they were on and off so much she didn't know where they were with each other anymore. She decided to proceed cautiously, but honestly.

"Chuck, honestly.." She thought for a moment. "All I can say is about what I see. I mean whenever you guys are together she looks at you constantly and her eyes light up like a kid on Christmas morning. It kind of feels wrong saying this but.. She looks at you like she wants to devour you. I guess you look at her pretty much the same, and the way.. Oh the way she smiles at you, Chuck, can't you tell she's madly in love with you?"

"In love with me?" Chuck stuttered. "No way, I don't believe you." But he so wanted to.

"Look! I know love when I see it, I especially know when your in love. And you are, you completely mirror one another's feelings, I mean every time she smiles at you, you shoot back an equally dazzling one, you know?" Ellie's eyes turned faraway and dreamy. Chuck already knew what he had been letting himself in for when he went to her, but it didn't stop the shock.

Obviously, Sarah wasn't in love with him. Of course, he could pretend that Ellie's theory was true and live in a complete fantasy dream world. But was he in love with her? He didn't know, but one thing he did know was that he wasn't going to give up on her over one stupid fight.

"Thanks El!" He mumbled, darting form the table as he remembered he had a mission. He took that for granted before, doing things, going places without the CIA thread hanging over him all of the time, watching him like he was a Big Brother contestant. It did make him feel safe, but also slightly smothered.

Sarah served the costumers like she was floating, because all of the time she was thinking about him. Didn't he know that she had turned down Bryce for him? Turned down a life of lust and adventure? She felt like screaming.

He wasn't a mind reader. How would he know? She'd acted so coldly towards him.

I'm sorry. She apologised in her fantasy, maybe she'd find the courage to do it for real later.

(The Christmas party at Buy More)

Sarah approached Chuck from behind, smiling to herself as she saw him dancing clumsily, shaking his shoulders, his face a picture of concentration. When he saw her, his mouth fell open in embarrassment, he immediately stopped dancing and stood there awkwardly. Though, as he registered the smile on her face, it made him feel a little better.

His insides threatened to tumble out. "Hi."

"Hi." Sarah said quietly, unable to stop herself from smiling.

"I'm glad you.. I'm glad you came." He stuttered, as she smiled encouragingly.

They stood in silence for a moment. "I got you something." Chuck finally said, walking past her and over to the Christmas tree. He picked up a silver alarm clock with a red bow on it.

"Tada!" He said. "New alarm clock, merry Christmas."

She smiled down at it. "You shouldn't have."

"Ah, come on. There on sale in home electronics. Which reminds me, you should probably scan that thing before you leave the store." He wasn't saying what he really wanted to say, he openly gazed into her eyes and let himself be truthful. "Look, it's also kind of a - kind of a thank you for believing me when you had a good reason not to."

She shrugged. "Well, it's my job - what I do. It's the one thing I'm good at."

Chuck didn't agree, she was such a gorgeous women with the self belief of a peanut. "Really? Because I'm pretty sure that your good at a lot of things."

"Well, as you can see everything that happened with Bryce - I'm not so good at relationships." She admitted, trying to stop everything she'd always wanted to say from tumbling out.

"I guess that makes two of us." He grinned. Sarah's face mirrored his, just like Ellie had said - but what exactly was her face mirroring? Because he was pretty sure that he didn't love her. Not yet anyway. Even though it felt like, he just had a huge crush on her that was slowly deepening by the day.

"Which makes me good at.. pretty much nothing, I suppose." He said nervously - hoping she would do something to change his mind.

How could he think that about himself? Sarah wondered. He's the most amazing guy.. Sarah! Stop it, come on!

"Chuck! You're good at your job too, and not just here fixing computers, you know the one where you risk your life for others. The one that you didn't ask for but was supposed to have.." She trailed off. It may have sounded cheesy but she was getting lost in his eyes. They were literally glittering with something - hope, admiration - what?

"Friends?" He said, startling her. What he really meant to say was, girlfriend? But she didn't feel the same way so if he was to have any relationship with her whatsoever, then he would have her as a friend.

"Friends." She repeated as he stuck out his hand. She moved hers towards his as she felt their skin connect and sent tingling sensations through her. Neither wanted to let go, they stood staring at one another gormlessly until Jeff came over with his hat jingling - looking very drunk. He held something above their heads.

"Mistletoe." He drunkenly glanced at them both. "You'll thank me later, dude." He added with a sinister grin.

Awkwardly Chuck suggested they just dance instead and Sarah agreed.

"Lame." Jeff said as he felt the world around him swirl, before he knew it he was passed out on the floor.

They danced for a while, foolishly doing robot moves until a slow song came on. It was slow version of Mariah Carey's 'All I want for Christmas is you'. All around them Buy More employees and their guests were partnering up and dancing in harmony to the slow music. He looked at Sarah and she glanced bashfully back at him. He shifted his eyes across to Ellie and Awesome, who had both arrived half an hour ago, after much persuasion. Ellie caught his nervous eye whilst she was laying on Awesome's shoulder.

"Go on!" She prompted quietly. "Go!"

Sarah could see from the corner of her eye, and knew full well what Ellie was doing.

"Chuck." Sarah whispered. "Come on, for the cover." She took a step towards him.

"Would it really be that bad?" She whispered into his ear.

"No." He replied, he felt that he actually would need to hold on to somebody because he was about to fall over because he was so overwhelmed by her, it nearly knocked him to the floor - literally.

He slowly placed his hands on the small of her back as she rested her arms upon his shoulders and she placed her head on his chest - not daring to look up at him. As the music continued, Sarah let herself fall from reality, it was just her and him in their own little world. Or maybe she was in her own world, alone with her torturous thoughts.

He squeezed his hands tighter as if he knew what she was thinking, he never wanted to let go of her. Just for a few moments, nothing was complicated. And it was that moment when he knew it was more than a crush. He didn't want to admit it to himself, but this wasn't a normal man's behaviour.

As they glided around the 'dance' floor, they became oblivious to everybody around them, and only when the music stopped, they were both forced to come crashing back to reality.

Sarah smiled as they broke apart, she felt as if her cheeks were going to explode. Then the song changed to 'Jingle Bell Rock', Chuck lifted his hands up high, grabbed Sarah's and twirled her around, she couldn't tare her eyes away from his, her breath caught in her throat - it was almost as if the air was being sucked from the room.

Eventually as the darkness fell, people began to leave, including Chuck and Sarah. They met up with Ellie and Awesome at the door.

"Great dancing you guys!" Awesome said, nodding his head at the recent memory. "So are you going home, Sarah?"

"Yeah.." She mumbled.

"But you never stay over!" Ellie said. "Why don't you?"

"I guess I could." She said quietly.

"I'm not the reason why you don't stay over am I?" Ellie said, pulling Sarah aside.

"What? No, of course not Ellie, why would you think that?" Her voice turned high and squeak.

"Well - I guess I am kind of interfering - sometimes." Ellie narrowed her eyes. "Or are you two not.."

"I'm staying over!" Sarah almost shouted, she wrapped her fingers around Chuck's as they walked to the car.

"Sarah!" Chuck whispered in the back of the car. "Why are you staying over?" He protested meekly. He didn't really seem to be convincing anybody because he himself really wanted her to stay over. It filled him with an intense rush of excitement.

"We both know those two suspect something." She replied. "So we need to do it for the cover."

"Okay." He said, satisfied with her answer.

It was really late when they got back to the apartment, Ellie and Awesome retired to their bedroom and Chuck and Sarah decided to do the same. They came into his room and stared awkwardly at his bed.

"I'll sleep on the sofa if you like." He was already gathering up pillows.

"Chuck." She grabbed him by the upper arms, she looked at him and gently prised the pillows from his hands. "It's okay."

He stopped babbling, he flopped down on to the bed and pulled off his jeans so that he was just in his T-shirt and boxers. Sarah looked around the room, realising that she didn't have anything to change into.

Chuck watched her carefully, he already knew what was wrong with her. He went to his wardrobe and pulled out an oversized black top, with the word 'NERD' printed in white, capital letters.

"Here, borrow this." He smiled.

"Thanks. Don't look." Obediently, Chuck turned around and when she said it was safe, he almost passed out. He'd never wanted to dive on someone so much in his life. Her golden hair was tied into a ponytail and the top he gave her swayed sexily at her knees.

She noticed him staring at her and immediately felt self conscious, she got into bed beside him and pulled the duvet on top of her.

"Um.. I guess this is good night." She said, turning off the lamp beside the bed.

Even though he wasn't touching her and was at the complete opposite side of the bed, she couldn't sleep knowing he was there. She had to clamp her hands together to prevent herself from reaching out and touching him, she swore that her heart was beating so fast that it was vibrating the bed. She just wished she could say everything that she wanted to, even if she overcame her own fears, Casey might still be listening through his ear piece.

"Sarah." He said quietly, secretly hoping that she had already fallen asleep.

"Yeah?" She turned around and propped herself up onto one elbow.

"Do you ever think about the time when we.. You know." He stuttered, not meeting her eyes through the darkness.

"Always." She found herself saying.

"Was it really a mistake for you?" He asked.

"Best mistake I ever made." She whispered so softly, she hoped that he hadn't heard - but he had.

"Why did you - I mean.. you know." He couldn't even say the word kiss, he felt seven years old again.

"I - Chuck, listen.. I can't talk about things like this, it's too hard."

"What's so hard about it?" He replied almost angrily.

"Just.. Please." She whimpered.

"Okay." He sighed. "But one day, when your ready, will you tell be about it?"

"Yeah." She laid her head back down and wondered when she would be ready. She couldn't sleep with the thoughts that were surrounding her. She had got herself in too deeply, there was no going back now. This man beside her was the best thing that had ever happened to her, and she felt such a pang of love that she vowed she would never let anyone hurt him - excluding herself, because she couldn't make any promises.

She heard his breaths lengthen and deepen and knew he had fallen asleep. She let herself edge closer to him so that she was half an inch away from his sleeping body, with shaking hands she placed her hands over his and nestled into his shoulder. Finally content, she fell asleep.

Chuck kept his breathing shallow, he could feel her hands on his and her head against his shoulder. He didn't know whether she had done it in her sleep or what, but he knew that he wasn't going to miss a moment of it and he held her tighter. For one moment he pretended that she was his, his to hold, to cherish. He already knew that tomorrow nothing would be said and everything would return to 'normal' but for now he could live in a fantasy.

He turned towards her, gently kissed the top of her head and savoured every moment.

I think this is the longest chapter I've ever done. I'd appreciate it if you reviewed. Thanks!