A/N Sorry for the delay, I had some stuff come up, but here is he second part. Thank you to all who read and reviewed the last chapter :)

-OoO-

Once Leonard heard the running water and the shower door close he went to his bedroom to fetch some clothes for his houseguest.

Keep it cool Hofstadter, he replayed in his head. It's just a girl, and ordinary girl. You've been living with a girl for half a year, how is this any different?

It did nothing though. He'd only gone out with a girl twice, the first one turning out to be a spy from North Korea. He still found it hard to believe that he'd invited a girl he found late at night into his house!

Opening the door to his closet, he picked out some sweatpants and a hoodie. Since Priya had worn them one time when they had recently moved in together, he assumed that they'd be comfortable enough for Penny.

Returning to the bathroom with the clothes in his hand, he knocked lightly on the door. "I have some clothes for you for after you're done."

There was a pause, and he didn't know whether to leave them outside the door or inside. Just as he was about to leave Penny answered. "Outside is fine, thanks!"

Leonard dropped the clothes on the floor just as he heard the water turn off. He frowned. That's not long for someone who's been wandering in snow for hours, he thought, then shook his head as images of Penny in the shower entered his head.

"I really need to get that under control," he murmured to himself, walking back to the kitchen.

-OoO-

Penny stepped out of the shower, scrubbing ferociously at her hair with a towel from the rack. She had never had a shower as quick as that one before…

And she blamed Leonard.

When Penny had a relationship with Mike, it was just that, a relationship. He asked her out, she said yes, and she never knew the reason why she did.

When Mike touched her, she'd feel nothing, just a touch. When she kissed Mike, she never felt sparks. If it went on for too long she'd even start thinking about what to eat that night or what shoes to buy. Hell, she hadn't even had sex with him for over a month!

But when Leonard had touched her, her heart had sped up, she got this tingly feeling and she hadn't wanted him to take his hand away. She'd even been thinking about him in the shower, which caused her to end it due to her imagination getting too out of hand.

How is this possible though? She thought. I've known him for all of two hours, surely you can't fall in love with someone that quickly!

Shaking her head to clear all thoughts, Penny walked to the door and grabbed the clothes from in the hall. Upon picking them up she noticed that it consisted of a green hoodie and grey sweatpants. Grinning she headed back into the bathroom and slipped them on. You would think it weird to put on a guy-you'd-only-just-met clothes.

But to Penny, it felt natural.

-OoO-

Leonard was sifting through his Christmas DVD's to watch when Penny returned, hair pulled into a ponytail. He couldn't help but notice how cute she looked in his clothes.

"Hey, do you want to watch National Lampoon's Christmas Vacation?" he asked, holding up the DVD.

Penny tilted her head, a confused look crossing her face. "Never seen it," she replied, flopping onto the couch and pulling her legs up. "Is it good?"

Leonard grinned and nodded. "It's about this guy who's married and has two kids and-"

Penny suddenly sat up. "Oh, is it like the European Vacation one?"

He nodded again. "Same guy, except in this one the kids are younger."

Penny smiled at him. "The other one was hilarious, so this one should be too." Leonard placed the DVD in the player and joined Penny on the couch, pressing play.

A few minutes into the movie, Leonard felt his phone buzz in his pocket. Wondering who would call him so close to midnight he answered it.

"Hello?" he said, just as Penny paused the movie. "Oh, hi Priya. Sure, you can come round. Okay, bye." He hung up, taking a deep breath and letting it out, falling back against the couch.

"Who's Priya?" Penny asked.

Leonard groaned. "My ex-girlfriend. She said she's going to come here and collect some of her stuff in the next fifteen minutes."

Penny frowned. "Okay, I know tomorrow's Christmas, but why can't she wait?"

Leonard looked to her. "She's moving back to India with her new boyfriend the day after tomorrow."

"Oh," Penny nodded understandingly. Then a smirk crossed her face, and she grabbed Leonard's arm. "You know what we should do?"

He looked to her, and noticed a mischievous glint in her eyes. "What?"

Penny was practically squeezing his arm, and Leonard held back a grimace. "We should pretend we're a couple! You say she cheated on you, right? Well, I believe the only reason she's coming back is so you can come grovelling back to her! What better way to tick her off than seeing you with another woman?"

Leonard did like the idea of making Priya jealous, but something Penny said was playing on his mind. "Hang on; what makes you think I'll come grovelling back to her?"

Penny bit her lip, holding back a grin. "No offence Leonard, but you seem like the kind of guy that would, considering you've only ever had two girlfriends in your lifetime. But don't worry," she moved so she was on his lap and ran her hand through his hair. "You're still cute though." She giggled. "See, I'm already in character!"

Leonard could only just stare as she started tracing patterns on his neck. If this was just an act she was pulling, she was extremely good at it. But right at that point he heard keys turn in the lock and the front door open.

"Quick, in character!" Penny hissed in his ear, proceeding to push him back onto the couch and straddling him. Not knowing what else to do, as he and Priya never did anything like this, he smiled and started tickling Penny's ribcage, eliciting a small scream and a fit of giggles.

"L-Leonard, st-stop!" she cried out, just as Priya turned into the entrance, a frown across her face.

"Leonard," she began. "Who's this?"

He turned around to look at his former girlfriend, and clambered into a sitting position. "Oh, hey Priya! This is, uh, Penelope. She's an old friend of mine from, uh, New York that will be staying here for a while."

"Maybe forever," Penny added, smirking and wrapping her arms around Leonard. Beginning to enjoy this game, Leonard grabbed her around the waist and pulled her back into his lap, rubbing his nose against hers, triggering a blush from Penny. Priya just rolled her eyes and walked away to collect her stuff.

Leonard noticed the blonde's reddened cheeks and smirked. "How're my acting skills?" he asked teasingly.

Penny swallowed hard and nodded. "Good," she managed. Too good.

She rolled off his lap onto the couch and attempted to catch her breath, glancing at the clock in the kitchen as she did so. "Twenty-five minutes til Christmas," she said, turning to the physicist and smiling.

Leonard nodded and pressed play on the DVD player. They watched it in silence for another twenty minutes, and then footsteps were heard coming down the hall. Penny smirked, shifting closer to Leonard on the couch.

Confused as to why Penny was doing this, he gave her an odd look. She gestured to the hall, and recognition showed on Leonard's face. Grinning he wrapped an arm around her and pulled her closer, where she lay her head on his shoulder. Apparently, they were enjoying this too much.

Priya came back into view, boxes in her hand. Turning to the "couple" on the couch, she forced a smile. "I hope you have a good Christmas. Leonard I'm coming back early in a few days to collect the rest of my stuff."

Without taking his eyes of the television Leonard nodded. "Sure, whatever," he muttered. Penny turned toward Priya and smirked at her, wrapping herself more around him. The Indian rolled her eyes and left.

A few seconds later Leonard spoke. "Uh, Penny, you can let go of me now."

Penny looked away from the door and realised that Leonard had released her, but her arms were still draped over him. Blushing she let go.

"Sorry," she apologised, moving away from him on the couch. They watched the movie in silence for about ten seconds before Leonard broke the silence.

"Would you like something to eat?" he asked. "You were out in the cold and you're probably starving."

Penny smiled. "Sure thanks," she replied, then got off the couch. "I'll come help you."

Leonard was about to object, but it wasn't everyday he had a woman who was both attractive and took an interest in his work in his house. She didn't seem to mind anyway, so he continued walking to the kitchen.

Penny opened the fridge and glanced at all the food in there. Suddenly something caught her eye.

Leonard was looking through the pantry. "Penny, would you like some-hey!" He was caught by surprise when something gooey hit the side of his face.

Penny giggled and aimed another egg at him. "What? They were expired anyway," she said, letting the egg go and managing to get him in the back.

Using the bread board as a shield Leonard ran to his desk in the living room and opened the bottom draw, where he kept emergency things.

"Take this!" he yelled, pointing the silly string towards Penny and squirting it all over her. She let out a scream that was quickly followed by a laugh as the egg she through before hit Leonard in the forehead.

Still using the bread board, he quickly ran to the kitchen and picked up an egg, throwing it towards the blonde. In response she darted forward and yanked the silly string from his hand, spurting the colourful sticky strings all over his face and neck, and the "shield" dropped from his hand.

"Ha! Not so smart now are you scientist?" she smirked, hand on her hip, but let out a gasp as a small bag of flour burst on her.

Leonard sneered from his place at the pantry. "You were saying?"

Wiping the flour from her eyes Penny took a few steps until she was face to face with the physicist. "Oh yeah, well take this!" She produced a cushion from behind her back and wacked him in the face with it, causing him to stumble back. Right before he fell down he grabbed her wrist and pulled Penny down with him.

Laying on the floor they both laughed, until they realised their position. Penny lay on top of Leonard, hands pressed against his chest, whilst his wrapped around her waist. They both reddened, when suddenly they heard the clock in the distance chime. Penny grinned.

"It's officially Christmas!" she squealed.

Leonard laughed at her enthusiasm. "Yeah, and we're lying in a puddle of egg and silly string!" He gestured to the mess around them on the floor, and she joined in his laughter.

They were silent for a moment, listening to the clock finish its chime and gazing at each other. "Thankyou for letting me stay the night," Penny whispered.

Leonard smiled. "Thanks for giving me the best Christmas I've had in years," he replied.

Penny grinned. "You're welcome." Suddenly she leaned down, placing a gentle kiss on his lips.

Leonard was shocked, but as soon as Penny released him he pulled her down again and pressed his lips against hers again. In the kiss she smiled.

They both knew that this was the start of something new.

-OoO-

A/N Happy holidays everyone! Reviews are appreciated :)