Hi everyone, and welcome to my very first Big Time Rush fic *applause roars out from the corners of my room*! I hope you guys like it!

Summary: When the guy Katie likes asks out another girl, she decides to make him jealous by having James pretend to be interested in her. But throw in an overprotective big bro, a jealous girl, & a skeptical bff and James and Katie may just end up in hot water...

Warnings: Language and some mild sexual references

Ages: James, Kendall, Carlos, and Logan are around twenty-one, and Katie is seventeen, so there's a four year difference. Also, in this story, the events of "Big Time Crush" happened when Katie was thirteen.

Enjoy the first chapter! :)

Chapter 1 – Always the Little Sister

Katie's POV

I was so not happy.

I had been waiting for Kyle for a whole ten minutes, and he had yet to show. I mean, how hard is it to just jump in the Palmwood's elevator and come down to the pool? You'd think he was living across the country or something, considering how long he was taking. And you know what was even more annoying? He was the one who asked me to meet him! I mean, what was his deal?

I squirmed a bit in my chair and looked around the pool. There was Guitar Dude, strumming away on his guitar by the pool. The Jennifers were at a table on the other side of the pool, sipping smoothies and chatting about whatever it is that they chat about. And then over at one of the other picnic tables James was playing checkers against Logan, who had his on-again/off-again girlfriend, Camille, in his lap.

My older brother, Kendall, and the fourth and final member of the group formerly known as Big Time Rush, Carlos, weren't in sight, nor was Camille's best friend, Jo, but that didn't surprise me in the least. Kendall and Jo had broken up a few days ago, and ever since then, Kendall had been locked in his room, listening to his iPod nonstop (no doubt to a bunch of depressing songs that makes the listener want to slit their wrists), and Jo had been throwing herself into her TV show. Carlos had discovered a restaurant that sold only corn dogs, so he had been there every day for a week, pigging out until he couldn't eat anymore. So he would be home around midnight.

I heaved a heavy sigh and pulled my phone out of my pocket to check the time. It was 1:20, and Kyle was supposed to meet me at 'our' table by the pool at 1:00. Where was he?

Well, the only way to find out was to text him. Where r u? I typed in and sent it off to him. A moment later my phone vibrated, alerting me that I had a new message. I opened it to find his response: Sorry, completely blanked on the time. I'll b there in a minute (:

He better be. I hated being blown off, especially by the guy that I had liked for four years. We had first met when I was thirteen and it was love at first sight, at least for me. But after James crashed our date, he seemed to kind of lose interest in being romantically involved with me. Which means we are the dreaded F word: Friends. Ah, the curse. I know it so well. It's followed me around my entire life. Boys never want to be date me, only to be friends. And yeah, I mean, I'm kind of a tomboy and I live in an apartment full of twenty-one year old guys, each of whom has no problem with punching people in the face, but really? Am I really that hideous? Grrrrrr…

My legs were beginning to cramp and my butt was beginning to protest, so I stood up and walked over to where James and Logan were sitting, each staring intently at the checkers board. It looked like Logan was kicking James's ass, which didn't surprise me in the least. It's the kind of thing that Logan's good at, him being Mr. Brainiac and all that, and James is…well…James. I'm always shaken when I see James without a mirror and comb in hand. Which means seeing him so focused on something other than his hair was enough to make me trip over my feet.

I caught myself before I slammed into the table and James, Logan, and Camille are looked up to stare at me.

"What?" I asked innocently. "James doesn't have his mirror or comb in sight, it's enough to throw anyone off of their balance."

Logan cocked his head. "That is true," he admitted while Camille smirked and James glared at us.

"I'm not that vain!" he roared

"James, your hair is messed up," Logan told him with a completely straight face.

James gasped and whipped his mirror and comb out from wherever he had been hiding it. A split second later he lowered both to shoot Logan a death glare. "My hair is perfect. Like always."

"Oh, but you're not vain at all," I teased him. "I mean, everyone hides a mirror and comb under the table so that they can fix their hair in the middle of a checkers game."

"You make it sound like it's insane or something," he complained.

"Oh, don't worry, I can't tell insanity from sanity, since I've grown up around you guys, so I don't know if you're crazy or not."

"Katie Knight – !" James began in a do-not-piss-me-off voice. I knew it well.

Luckily, at that moment, I saw Kyle walk out from the lobby and I quickly backtracked towards the table. "Can't talk, gotta go, see ya later!"

I reached the table just as Kyle approached it. "Hey Katie, sorry I'm late," he apologized with one of his sweet smiles, and I couldn't help but return the grin.

"No problem, I was just hanging out with the guys."

"Yeah, I heard James shout at you."

"He's over-emotional."

"I caught that."

We sat down in chairs opposite each other and he grinned lopsidedly. I remember being completely in awe at how cute he was when he was thirteen, but four years later he was absolutely drop dead gorgeous. He had really filled-out, and his brown hair flopped into his dark eyes. The only guy who could compete with him when it came to looks was James Diamond, and I was so not bringing him into the picture.

"So, you said you wanted to meet me?" I confirmed, referring to the text that he had sent me earlier that morning.

"Yeah," Kyle said, and leaned forward, his eyes glittering. "So, you know that new girl who's going to be co-starring on my show?"

Uh oh…

"Yeah…" I said slowly. Kyle was the star of one of the hottest TV shows, Farlington Falls, and there were always pretty girls guest starring on the show. But last night when we had talked on the phone he hadn't been able to shut up about the new girl, Scarlett, or whatever the hell her name is.

"Well, I texted her this morning and she said she'd really like to get to know me outside of the show, so we're going to dinner and then to a movie – Kiss and Tell 3. Isn't that awesome?"

If he defined awesome as feeling as if someone was twisting your insides around and then trying to yank them out of your body, then yes, it was very awesome. If he meant it by the traditional meaning, then no, it absolutely sucked!

But I couldn't tell him that! Not when he was so excited to be going out with Scarlett anyway, otherwise I might have finally gotten up the nerve to ask if he would mind replacing her with, oh, say, me. Of course, he would probably just laugh and think that I was joking, so I was better off keeping my mouth shut. It was like something from a Taylor Swift song. I wonder if she had been secretly watching my interactions with Kyle…

But I knew I had to pretend for Kyle's sake (and mine), so I squealed, clapped my hands together, and gushed, "That is so fantastic Kyle! Sounds like you're going to be having fun tonight."

He smirked. "Oh, I know. You should see her K, she's gorgeous." As opposed to me. "And," he continued on, "she's Jett Stetson's little sister."

My jaw dropped. "Jett Stetson has a little sister?" Now there was irony for you. Jett was Jo's costar and she had been photographed with him constantly ever since breaking up with my brother. Did the Stetsons just have it in for us Knights or something?

"Yeah…but she's nothing like him," he added quickly, seeing the look of repulsion on my face. "She's actually really nice."

Right, the same way Jett was nice. He was a total sweetheart to Jo, but was a jackass to everyone else. I was betting Scarlett was the same way.

"That's totally awesome!" I managed to get out, sounding like an over-perky cheerleader in some cheesy teen movie. And here I am, without any pom-poms…

"Yeah, isn't it?"

He leaned back in his chair, arms folded behind his head. "Ahhhh…It's good to be me."

And it sucks to be me.

"Anyway, are you ever going to date anyone?" he wanted to know.

"Yeah, probably once I go off to college," I told him. "No one around here is really my type."

Kyle frowned. "Aren't you going to that business college that Arthur Griffin owns? That's right here in LA."

"Well, yeah, but I'll finally meet some new guys," I said in my most chipper voice.

"Oh, that's cool." He flashed me the double thumbs-up sign and another grin. He looked so adorable leaning back in his chair all casually as if he just didn't care. God, I'm pathetic.

His phone suddenly chimed and he pulled it out of his pocket. "Scarlett wants to meet me right now, to run lines. She's nervous about the scene. That is so cute!" That wasn't exactly the word I would have used, but then again, if I had said what I was thinking, I probably would have had to rinse my mouth out with soap and water.

Kyle's fingers flew over his phone's keyboard as he replied. "The scene she wants to go over is the one where she accidentally runs into me and then she kisses me to apologize."

"So she's playing a slut?" I couldn't help but quip.

"Of course not! Her character is just very free-spirited."

"Right, of course, I should've known."

"Anyway, she's coming over here right now, she was in the neighborhood anyway."

How about that. What a coincidence.

"So I should get out of your hair?" I suggested, feeling my heart sink down into my stomach.

He smiled sweetly at me. "If you don't mind Katie. Sorry, it's just, you know…"

"I know, I know, pretty girl and all that," I said, trying to act as if I didn't really care that he was blowing me off for Jett Stetson's little sister. One day I might actually get used to this, and then it won't bother me so much. But right about then I could literally feel my heart breaking. "Don't worry about it, I'll find something else to do, it's not a problem."

I got to my feet, just as a female voice called, "Kyle! There you are!"

I caught sight of a pretty blond girl rushing towards Kyle, a wide, toothy beam stretching across her face. Geh. He wasn't kidding. She really was beautiful, with large blue eyes, tanned skin, and the kind of body that most of the female population in LA would kill for.

"Scarlett! Hey there babe!"

Dang. He never calls me 'babe'.

I backed away, wanting to get away from there as quickly as I could, but I guess my escape didn't go unnoticed, because I heard Scarlett say to Kyle, "Darling, who was that?"

Darling? Really? What is this, the 1940s?

"Oh, that's just Katie. She's like my sister."

Ow. That one hurt.

I could feel an ocean of anger pooling in my stomach, and I wanted more than anything to make Kyle jealous, and show him that I wasn't completely undesirable to the male population. But how?

A yell from James's and Logan's table caught my attention. James was sitting in his chair, face in his hands, while Logan did a little happy dance in his seat with Camille still in his lap, clinging to him so that she didn't slide onto the floor. Logan was grinning madly, like an evil scientist about to perfect a ten-foot-tall-car-eating monster. "You have four pieces left James. I can't wait to see how you're going to get out of this."

"I hate you," James moaned pathetically from behind his hands. He sounded just as desperate as I felt, and suddenly I felt terrible for him. He was about to lose checkers to Logan again and I had just lost Kyle to another girl. Again.

And just like that, a light bulb seemed to flash on in my head. It was perfect. Even better, it could actually work.

I strolled towards the table, ready to prove myself to everyone.

James's POV

I was being beaten ruthlessly by Logan, and nothing, not even my fabulous hair, could save me now. Of course, my fabulous hair generally only works on girls, so it wouldn't have worked on Logan anyway. Well, it might've, if he was gay, but considering the unmistakable fact that Camille was in his lap, he seemed pretty straight to me. Damn.

"I hate you," I groaned, sounding pathetic even to myself.

Logan smirked. "Yeah, I know, but it is so worth it. It's your turn."

I dropped my gaze to my pieces. They were spread out on the board, and within a couple of less-than-smart moves, they would be taken by Logan's pieces. I was so screwed. I needed a miracle, a tornado or something, to suddenly hit the checker board and move our pieces around so that I could get the upper hand.

I glanced up at the sky. No weird-looking clouds, so I guess the tornado-idea was out. Well, in that case,

maybe I could yell "OH MY GOD! Is that Blake Lively?" and then dump the game board over and spring from my seat and run like hell. Yeah, that sounded like my best option.

Okay, so on the count of three.

One…

Two…

"Want some help?"

I tumbled right off the chair in complete shock. I hadn't even heard the girl walk up.

"Damn it Katie! You nearly gave me a heart attack!" I griped as I picked myself up off the ground and plopped back in the chair, crossing my arms and giving her my best angry face.

She wasn't even scared. Not surprising. That girl's the bravest little thing I've ever met. Also the most conniving and manipulative, but we won't get into that.

She stared right back at me, dark eyes like steel brownies, crossing her arms over her chest. "So?"

"So what?"

"Do you want my help or not?"

Logan now looked slightly concerned, probably because Katie could very easily give him a run for his money and he didn't want me accepting her help when he was so close to winning, but I didn't pay any attention to him. I gazed back at Katie. I was sure she could help me beat Logan, but I had no idea why she would take an interest in our game.

"What's in it for you?"

"Let me sit in your lap."

That sent Camille off into peals of laughter, and Logan lost his concerned look and instead started chortling. I guess the look on my face must have been pretty alarmed, otherwise Camille and Logan wouldn't have started laughing like that, but give me a break. The girl is seventeen and I'm twenty-one. That's a full four year difference, and she also happens to be my best friend's baby sister. As you can see, I have two very good reasons to be freaked out by what she had just said. Plus, she's like my little sister, so that just adds to the weirdness.

Katie gave me a long stare. "I'm serious. And no, I don't like you like that! I just want to make Kyle jealous." She nodded her head towards where Kyle was sitting at the table he and Katie usually sit at. Across from him was a stunning blond. It was amazing I hadn't noticed her earlier.

"Wow," I intoned, raising my eyebrows at Logan, who had mirrored the movement and gave a low whistle. Camille promptly slapped him across the face and he quickly assured her that she was the most beautiful girl in the whole of California. Katie just raised an eyebrow at me but didn't say anything.

"That's Scarlett Stetson, Jett Stetson's sister. She's starring on Kyle's show, where she runs into him and kisses him."

Camille frowned. "Isn't that a bit slutty?"

Katie smiled bitterly. "No, apparently she's just free-spirited. But that's the scene they're going to act out."

I glared at Kyle and Scarlett. Katie had had a crush on Kyle for four years, and ever since I kind of happened to mess up their first 'date' he hasn't been interested in her as more of a friend. Which I guess is pretty much my fault, but in my defense they were going to go see this movie that was completely inappropriate for thirteen year olds! It was supposed to be the hottest make out movie of the year! I mean, with that kind of action in it, what was I supposed to do? So yeah, I had followed them around with the girl I had asked out, and had gone so far as to buy four tickets to Unicorn Princess, a more age-appropriate movie. Of course, the girl hadn't been too thrilled and had promptly dumped me. Katie and Kyle had backed out of Kiss and Tell, and had spent the evening playing video games in the lobby, but I guess the damage was done. Kyle had lost all romantic interest in Katie, but had remained friends with her. She had always hoped that he would one day see her as a potential girlfriend, but that didn't seem likely to happen anytime soon.

But wow…They were going to do a kissing scene right here at the pool? No wonder she wanted to make him jealous. And chances were Kendall wasn't going to be coming out of his room anytime soon. He could get a college degree in moping.

I heaved a huge sigh but nonetheless patted my lap. "Sure Katie, you can sit in my lap. Just help me beat Logan."

She sat down in my lap and I put an arm around her waist to steady her. She leaned forward to study the board, giving me a fantastic view down her shirt, which I refused to admire. She was practically my baby sister; it would just be creepy to try to get a good look down her bra.

Logan smirked, no doubt knowing just what I was thinking, and I glared at him. It wasn't my fault Katie was positioned in such a way that I had to stare in the opposite direction if I didn't want to stare at her cleavage. But something told me that Logan wasn't going to be accepting that explanation anytime soon. He was too busy being amused at my every move.

Katie straightened up and smiled, completely ready with a sinister plan to dominate Logan at checkers. "Okay James, this is what you're gonna do…"

With her directions, I managed to get out of Logan's trap and got in a few good moves. It wasn't long before I had him slumped in defeat.

"King me," I said in triumph as I moved one of my pieces over to Logan's side of the board. He grimaced but slapped one piece on top of the other.

Within a few more minutes I had won the game.

"Thanks Katie," I said with a grin. "I owe you one."

She flashed me a smile. "I'll be holding you to it."

"JAMES!" I nearly fell of the chair again, but Katie's weight held me down.

Kendall came storming out from the lobby and over to where I was sitting. "WHY IS MY BABY SISTER ON YOUR LAP?"

Oh shit.

"Dude," I said as calmly as I could, holding my hands in the air like I was being arrested, "it's not what you think. She was just helping me win the game."

"Oh really," Kendall said coldly. "Is that what she's doing?" He turned his attention onto Katie, who shrugged.

"Well, where else was I supposed to sit? All the other chairs were taken. I was just trying to help James."

"Yeah man, trust me, I'm not making any moves on your sister, she's too young for me."

Kendall ignored me. "Katie, get off of James's lap."

She wordlessly slid off. By this time the entire pool, including Kyle and the blonde, were staring at us, waiting eagerly for whatever was going to happen next.

Kendall grabbed the collar of my t-shirt and yanked me to my feet. "I know you James," he hissed. "And I know that as long as a girl is hot, you'll sleep with her. And that girl is not going to be my baby sister!"

And before I had a chance to assure him that I would never lay a hand on Katie, he pushed me right into the pool.

So how was the first chapter? Sorry if the characters are OOC, I'm still trying to get a feel for them. Anyway, please review, because I'd love to hear everyone's ideas on the first chapter! Plus, I think the review button might get a little lonely if it's ignored for too long...but that's just a theory ;)