It was somewhere in the middle of the night when Nick woke to the sound of Sara mumbling in her sleep, or at least he assumed she was sleeping.

"Nicky...so nice." Her mumbling alone might not have woken him up if she hadn't been moving around so much trying to get warm. It had gotten chillier outside and it was apparent from the lack of lights from inside the lodge that everyone else had gone to bed.

Perhaps it was his sleepy state and perhaps it was the way she was saying his name, but in either case, Nick couldn't seem to resist kissing Sara's forehead and holding her a little bit closer; another kiss on her cheek, one against her hair, and one dangerously close to her mouth before he pulled back a little.

Sara wasn't really slumbering any more. Her dream had seemed to morph into reality as her eyes fluttered open at the sensation of Nick's lips against her face. She slid her hand up and cupped the back of his head; the only thing on her mind was that she wanted to kiss him.

If Nick had been sleepy before, he was wide awake the moment that Sara's lips touched his and he quickly responded to her kiss. Suddenly the only thing he wanted was to memorize the taste and feel of her lips while his tongue explored every nook and cranny of her mouth; Sara seemed intent on the same purpose.

By the time they pulled apart several minutes later, they were both breathless and a little flustered from what had just transpired. Sara finally spoke. "Was that what you meant by things getting awkward?" Her voice was breathy and a bit husky.

Nick let out a soft chuckle. "Something like that." He wasn't sure if she was ok with what had just happened or if she was going to be upset with him for responding to her kiss.

Sara cleared her throat a bit nervously. "That didn't really feel that awkward to me…I don't know about you…I kind of enjoyed that." She wasn't sure where her boldness was coming from; perhaps the darkness of the night gave her a false sense of security.

"Yeah, me too." Nick was giving serious consideration to kissing her again, her close proximity making it difficult to think about what the consequences of their actions would be come morning.

Sara was finding it quite natural to just mold herself against Nick's body as her fingers toyed with the collar of his t-shirt. "You know, it's cold out here." Snuggling up to Nick certainly made things quite a bit warmer, but the thought occurred to her that she had a perfectly good room, with perfectly good heat going to waste since from what Nick had said earlier Catherine seemed to be occupying the room Nick was sharing with Warrick.

Nick was feeling a bit bolder and he pulled Sara closer enjoying the feel of her body pressed against his. "Did you have something in mind to warm up?" He had a few ideas of his own, but wasn't sure he should suggest them after one kiss.

"I might." Sara wasn't really thinking rationally, if she had been, she wouldn't have slid her arms around Nick's neck and pulled herself astride his lap as she pressed her lips to his in a fiery kiss. All her inhibition seemed to have flown off to the moon as she made it abundantly clear in which manner she wanted to warm up.

For a moment, Nick wasn't sure he wasn't dreaming. He'd been attracted to Sara for nearly as long as he'd known her, but he never thought he might actually have a chance with her, and from the way she was pressing herself against him, it looked like that was exactly what he was getting. He returned the kiss with equal fervor, and he found his hands drifting down to grip her ass through the jeans she was wearing.

Sara broke the kiss and whispered huskily. "My room is empty." She had every intention of letting this go wherever Nick wanted it to, but she didn't really think that the chaise lounge was the place she wanted it to happen.

Nick floundered for a fraction of a second as what she was suggesting registered in his mind. "Ok." He needed no further encouragement, because the more he kissed her, the more he wanted her.

Sara reluctantly pulled herself off of his lap and gathered the blanket around herself as she climbed off of the chaise lounge. She offered Nick her hand and found that she had a sudden flurry of nerves as he stood next to her. She'd always thought he was attractive, but she hadn't ever considered that he might be attracted to her. There was no mistaking that attraction in his kiss.

Neither one of them said anything as they quietly stole back into the lodge and headed towards Sara's room. As soon as they closed the door to her room behind them a wave of nerves hit them both. Kissing was one thing, but sex would change everything.

Sara started to babble nervously. "So…uh…there are two beds…unless Catherine comes back…so maybe we should share…unless you're not tired." She stared at him wide-eyed hoping that he didn't regret the kisses they'd shared and that he didn't think she was being too forward.

"I'm not really tired anymore." Nick stepped towards her, searching her eyes to see if this was what she really wanted. He knew what he wanted, but he didn't want her having regrets in the morning. "But I still think we should share…but I don't think Catherine is going to be coming back tonight."

Sara smirked. "I guess she probably won't…" She cleared her throat a bit nervously as Nick took another step towards her and rested his hands on her hips. "So maybe we should talk…" Talking was really the last thing on her mind.

Nick shook his head. "Talking is overrated." He smiled at her as he leaned in and softly kissed her before pulling back to check her reaction.

"Mmmn." Sara murmured as she looked up into his eyes. "More." She cupped the back of his head and pulled him into another kiss.

That was all the encouragement Nick needed as he wrapped his arms around her and pulled her flush against his body. He was so caught up in the kiss that he didn't realize that Sara was moving them backwards until he found himself falling onto the bed tangled up in her arms. They continued kissing as they scooted up the bed, neither one of them particularly interested in discussing just where this was headed. Nick's hand began to creep up the front of Sara's shirt and he'd nudged one of his legs in between hers as Sara just pulled him closer.

Neither one of them heard the door to the room open until the voice of Catherine Willows interrupted the passionate kiss they were sharing. "I take it I came at a bad time."

Nick and Sara sprang apart, not quite sure how to respond to Catherine's comment and based on the amused smirk on her face, they weren't quite sure what to say anyway. Nick cleared his throat. "Uh, hey, Cath…you look a lot more…uh, clothed than the last time I saw you…" he smirked back at her in an attempt to lighten the moment.

Sara was feeling flustered and incredibly aroused and she wasn't sure whether to be embarrassed at being walked in on, thankful that they were still clothed, or irritated at being interrupted.

Catherine quirked a brow at Nick and Sara. "I could leave…"

"Uh, no…" Sara interjected. "Uh, we were just..." It was obvious what they were doing, but she felt like the moment had been broken. Besides, if she and Nick were going to be together, she didn't need the whole world knowing about it, or at least the moment it was happening.

"Sara, you don't need to explain it to me. I can just find somewhere else to sleep if you two want to be alone." Catherine couldn't help but smile at the pair, who had still made no move to get off the bed.

A thought occurred to Nick and he regarded his supervisor curiously. "Uh, just why aren't you with Warrick?"

Catherine crossed her arms over her chest and smirked. "Grissom knocked on the door and wanted to talk to him about something…Warrick suggested they go for a walk because he said you were sleeping and I decided I'd better leave in case they came back."

Sara let out a frustrated sigh, garnering a glance from both Nick and Catherine. "Sorry, it's just if Nick is supposed to be asleep in his room and Grissom comes back…"

"I should go…" Nick interjected reluctantly. He really did not want to leave, but he really didn't want an audience either. He reasoned that there was plenty of time left in the weekend to be with Sara, or worse case scenario, after this retreat was over maybe he'd have time to advance.