A/N:I was bored so I wrote this. It's suppose to be a oneshot but I'm contemplating whether or not to continue. I really think this chapter is chicken scratch though, I don't know, what do you think?

Story:Apparently it's a Dasey.

Rated: M for sex.


She stood there in his doorway in nothing but her pink sweat pants and spaghetti strap tank top. She looked so beautiful and relaxed and dare he say seductive? He couldn't take his eyes off her as he sat at his desk pretending to be busy.

"What do you want?" He asked dryly.

"I just wanted to see what my brother is up to," She said with an innocent little smile on her face.

"Step," He replied quickly.

She grimaced and sat on his bed crossing her legs, leaning back on her elbows. "What are you doing, Derek?" She asked. "Looking at porn again?"

He shot a surprised glance at her and said, "That stuff wasn't mine that you saw on here the other day-"

She interrupted, "Relax, I'm not gonna tell."

He became suspicious. "Why are you acting like this?"

She stood up and walked up behind him. "George and my mom are gone. Lizzie and Edwin are spending a night at their friends house and Marti's with her mom." She whispered in his ear.

Derek couldn't deny the fact that his step-sister, Casey, was at the moment getting him hard. He also wasn't sure what she was trying to imply.

"Think about it," She said as she walked out.

Later that night Casey stood at the sink washing the few dishes that were left there. It was almost midnight and she was starting to get tired. She paused for a moment, when suddenly she heard footsteps behind her then hands slipping onto her slim waist. She didn't have to look back she already knew who it was. He started pulling at the waistband of her pants, then he began to nibble at the skin on the back of her neck sending goosebumps up and down her spine. He moved his hands up and caressed her bra-less chest. Her nipples were hard and were clearly seen through that white tank she was wearing.

"Is this what you wanted?" He asked her.

She turned around and saw the face of Derek, a wild look in his eyes, like he was ready to pounce on his prey. "What ever are you talking about?" She asked with a sly smile on her face.

He gave no answer and just devoured her lips right there, running his hand up her bare back. Just as he was about to continue she stopped him and walked into the livingroom like nothing happened.

Derek was no doubt confused, why the hell would she do that? Did she enjoy tormenting him like this? Was this some kind of sick game for her? He just wouldn't have it. He walked into the livingroom and sat on his chair. He glanced at her as she channel surfed, looking bored as ever.

After a while she stood up and began to walk away, but Derek just followed and before she could get to her room, he had grabbed her by the arm and slammed her against the wall. Their faces only centimeters apart.

"What the hell, Derek?" She exclaimed, surprised and a bit upset at his action.

"Don't 'What the hell, Derek' me," He snapped back. "You're getting exactly what you asked for."

She asked, "And what's that?"

He didn't respond he just pursed his lips against hers once more, penetrating her mouth with his tongue in a rough, passionate manner. Their breathing becoming more rapid, their hearts palpitating as he held her against the wall by her hips. She decided to take the upper hand and pushed him to the other wall as she nibbled on his bottom lip. He exploited her luscious body as she did this. She rubbed herself up against him, arousing him more than ever. He moaned against her lips as she smiled in and laughed. Derek soon picked her up by her waist and walked into his room slamming the door shut. He roughly threw her flat on her back on his bed and there they just gazed into eachothers eyes for a moment. Derek took off his shirt showing off his lean torso which hockey practice gave him. She shot him a seductive glare as she just laid there, waiting for him. He slowly laid on top of her caressing her neck, simultaneously pushing her tank top straps down her shoulders. She moaned in pleasure as he used his tongue against her skin. His hands soon made their way down to her pants and gradually took them off revealing her red lacy underwear, which came off not too long after. He placed his fingers against the core of her womanhood and felt how wet she had gotten, just for him. He took off his pants and boxers and without hesitation slowly moved into her, penetrating her deeply. Groaning in total ecstasy he thought how wrong this had to be, but at the moment didn't care. All he cared about was causing her to moan his name and that he did with much success. He continued to thrust into her, slowly at first, then it became more rapid and rough.

"Oh god, Derek," She moaned as he quickened.

He could feel the orgasm coming ever so quickly, but he held back. He was a gentlemen, he wanted Casey to go first. "You like that?" He asked, pounding into her even faster.

"God, yes!" She squealed. Both of them soaked in sweat and out of breath.

"Tell me you wanted this," He said going even faster.

"Uhhh... I wanted... this..." She managed to whisper. Her face began to contort as if something inside her had exploded. She gripped the bed sheets, her body flinched as her orgasm hit her like a slap to the face. She fell back in a silent scream of pleasure.

Derek grimaced, but not too long after his abs tightened and his body tensed as he released himself into her. "Oh God..." He whispered as his eyes rolled back in satisfaction. He then collapsed onto her, catching his breath as she did the same.

"That was amazing," Casey whispered.

Derek rolled over and laid next to her. "Yes it was."

She looked over at him surprised at his response.

"I mean, you know, it was alright," He shrugged.

She smiled and stood up to look for her clothes.

"What're you doing?" he asked.

"Getting dressed so I could go to my own room," She replied.

He frowned. "Why don't you just sleep with me? Everyone will be gone until tomorrow anyway."

"Are you kidding? I'm not willing to risk getting caught," She said with a short laugh. "Get some sleep." She slipped her underwear and pants on and walked out.

There the young Venturi was left puzzled. What the hell just happened? He wondered. I just had sex with my stepsister. He laid there in bed. That's all it was, though, just good sex. I don't have feelings for her. Atleast I don't think I do...