A/N: Ok, so I know I have two other unfinished stories out there, and I PROMISE I will finish them, but I HAD to start this. Thanks to True Love Lives Forever who suggested that I do a Nasey vs. Masey vs. Dasey story.

Disclaimer: If I owned LWD there would already be some "hot Dasey action."

PROM!

Casey stared at the gorgeous pink dress in her closet. She ran her fingers over the shiny silk and delicate lace. It was the perfect dress. Casey had found it a couple months earlier hidden away in a small boutique filled with dozens of puffy prom dresses, but when she had seen this dress…it was truly love at first sight. Casey could not wait to go to prom. Prom night was swiftly approaching, and Casey and Emily were obsessively planning every detail. Casey was thrilled when Max asked her to the prom, even though they were already dating and it was a given that they would go together. Casey wanted the night to be romantic, fun, and absolutely wonderful. And if every thing went according to Casey and Emily's plans, the night would be just that.

"No matter how often you look at it, the dress will still be the same," Derek drawled from the doorframe. Casey didn't realize that he had been standing there for a few minutes.

"What's that supposed to mean?" Casey whipped around to face Derek. The dress that Casey had just been mesmerized by lost all of her attention.

"That's the third time I've seen you stare at that dress today," Derek said while entering Casey's room.

"So? It's going to be prom soon. Besides, shouldn't you start looking for a tux?"

"What for? I've got plenty of time."

Casey rolled her eyes, "That is so you. Way to procrastinate."

Derek folded his arms, "Way to be an obsessive freak. I heard you talking on the phone to Emily yesterday. I can't believe that dress cost $600!"

Casey folded her arms, "I had to get it. Besides, I paid for half of it."

"Heh," Derek scoffed.

There was a slight pause.

"So," Casey started. "Who are you taking to the prom?"

Casey looked down at her shoes and fingered the hem of her shirt.

"I'm not sure yet-"

"You can't get a date?!" Casey suddenly looked up with shock written all over her face.

Derek laughed, "Please, McDonald. I can get any girl I want for prom. I just haven't decided whether I should take Lisa Hoffman or Amy Park."

Casey started to roll her eyes, but stopped immediately when Derek said Amy's name.

"Wait! Amy Park as in Max's ex-girlfriend Amy?"

"Yep, that's the one."

Casey folded her arms, "I don't like her."

Derek ignored her, "Now, Lisa's super-hot, but Amy's blonde. It's a tough call."

Casey's lip curled, "Yeah? Well they're both really slutty and mean."

"Well, it's a good thing I like 'em slutty and mean." Derek smirked.

"Ugh, you pig."

"Whatever, it doesn't matter. I just have to go with Amy or Lisa."

"Why just Lisa or Amy? There are other girls in our school."

"Yeah, but none of the other girls have a chance of becoming prom queen."

"That's why?"

Derek smirked, "Well it only makes sense for the future prom king to go to the prom with the future queen."

"Ugh! I hope nobody votes for you, you arrogant jerk!"

"Casey," Derek laid a hand on her shoulder, while trying to contain his laughter. "Don't be jealous."

Casey slapped his hand away, "I am not jealous! I just think that the prom king and queen should be two upstanding students who are kind and considerate and hardworking!"

"Sorry, Case. Keeners like you don't get voted prom queen."

"Oh yeah? Well maybe that's all about to change."

Derek grinned devilishly, "Are you challenging me?"

"I bet you fifty dollars that I can become prom queen."

"Whoa!" Derek's grinned widened. "That's a mighty big bet there Case. It's too bad that it's just beyond your reach."

"Well then this should be an easy bet for you to win," Casey folded her arms.

"Fine, you're on. What happens when you lose?"

"If I lose…I'll do your chores for a week."

"Tempting, but not enough."

"A month?"

"No, no. Hmmm…" Derek feigned thoughtfulness. "I'll think about it."

"Fine."

"Later, McDonald," Derek walked out of the room with one backward glance.

Casey smirked. Derek was going down.

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Derek smirked. Casey was going down. She had surprised him when she made that bet. He didn't think she had the balls to beat him in a bet with stakes this high. Derek didn't even know what she would do for him when she lost. Maybe he could make her his slave for a week. Anything he asked for she would give him. Clean my room, Casey, he imagined himself ordering. Take out the trash for me; take off your shirt for me. Derek stopped completely. He had no idea why he kept having thoughts like that about his keener step-sister. Derek could control everyone around himself, but when it came to his thoughts about Casey; he felt like he was a complete bystander. Derek hated it because Derek Venturi always had to be in control.

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A/N: I know there is going to be a prom episode this season, but this is my own version of their prom. Don't worry Max and Noel will be making appearances soon. Now I'm going to work on updating my other stories…

-Emma