During/after the episode where Truman cheated on Casey with Vicki. Kind of AU because, while I love LWD, I don't watch the eps in order. So I don't know if this follows the show or not. I switched from Casey and Derek semi-POV's a lot. I'm sorry if it confused or anger you. Please don't kill me! Also, I feel this is a standard Dasey plot, it has a little of everything in it. I like the direction. No flames, criticism welcome. Please review!

Derek

He stopped dancing with the hot blond chick and turned around to look at her. She already had him worried with the quiver in her voice. One look and he saw a broken heart all over her face.

Casey told him what happened. He stomped over to Truman and Vicki. He told them both to apologize and told Truman to leave her alone. Never had Derek been this mad. No one had ever done this to Casey, behind her back, let alone to her face.

On the way back, after getting rid of the treacherous Vicki, he silently took Casey's hand. Her head snapped up and stared at him in astonishment and confusion. He didn't say anything; he just drove in silence and continued to hold her hand.

Casey

They got home and Casey stayed up talking to Nora and Derek went to bed. Casey told her mother everything that happened with Truman and about how sweet Derek had been. Nora said he was sweet and would someday be a very good boyfriend, after he matured in a few years. Casey thought about that all night long and she couldn't get it out of her head.

The next morning, she picked a fight with Derek on purpose, for once. Usually he started the fights over the cereal because she would always pick his "favorite", no matter which box she chose to eat from. This day was different, she told Derek it was HER favorite cereal this time, did what he did and stole the box and ate what was left. She giggled as an astonished Derek sat staring at her and at his empty bowl and back at her again.

After the breakfast scene, she flounced up the stairs and into the bathroom. She took her time and curled her brunette hair with perfectly placed blond and light brown highlights. She took her time applying a small amount of eye liner and a small bit of eye shadow. She felt the need to look extra attractive today.

Derek

Derek groaned as he stopped in front of the bathroom door. She was excruciating today. First the cereal now, the bathroom? What was the order of his house coming to?

He banged his head on the door, "Case, open up. I really need to pee."

"You're disgusting Derek!" She yanked open the door as his head was going to hit against it one more time. He lost his balance and fell on top of her.

"Woah, holy shit Casey. Don't do that to a man when he's…" he stopped and stared at her.

"When he's what, Derek?" She looked up and crystal blue met dark chocolate.

They stared at each other for a moment before Derek realized how awkward it would look if one of their sibs found them, or worse, their parents.

"You don't do that," he gulped, "when a man is banging his head on the door and has to pee. Men have one-track minds you know." With that he shoved himself off her. His heart was beating fast and he felt certain she had either heard or felt it.

"You-you uhh… you look nice today," and then he slammed the door on her face.

Casey

She stood outside the bathroom starring at the door.

What. Just. Happened?!?! Her own heart was going a zillion miles a minute. She was sure he face was flushed as well. There had been a spark, almost like electricity running between them. She wasn't sure what it was. But at least she had caught his eye. That had been her goal. She'd be afraid it would take all day. Derek is not someone whose attention is caught by simple girls. The girl has to have big boobs, long hair, long lean legs, basically the standard sexy woman. But he said she looked good. And that made her smile.

On the ride to school, she didn't really talk. She was just happy. She slightly bounced in her seat.

"You should stop doing that in my car. Why? Because it's my car, my rules. And bouncing might kill The Prince." He absent mindedly put a hand on her jean covered thigh to make her stop. Electricity ran through her body. She was sure he felt it too because he was staring at her. He yanked his hand back and the feeling went with it.

The rest of the day they avoided each other like the plague. But it wasn't because they were mad at each other. It was quite the opposite. The feelings they had whenever they accidentally touched was too much for either of them. And since neither of them could really talk to anyone about it, they tried to sweep it under the rug.

Derek

Only Sam didn't buy it.

"Dude what's up? You and Casey have another fight? 'Cause you've been avoiding her…" he pointed out during a textbook locker stop.

"Yeah, something like that… That and I just get this…weird feeling when I'm around her. And I'd just rather not have emotions or feelings of any sort, so I'm avoiding her. Simple as that my friend." Derek said as he swung an arm around Sam's neck and walked to class.

He sat in his biology class doodling and writing songs as per usual Derek. As he was writing, he started describing someone in his current song.

She has long brown hair and amazing blue eyes,

she was only herself when she was alone and dancing

She was never really free

She just wanted to be loved, like everyone else.

Finally he realized he was writing about Casey. He started at his notebook in wonder. Guess I'm going to have to think about these…dare I say, feelings, I have for this particular step-sister.