Disclaimer: I do not own Life With Derek.

A/N: This is probably the only main focus Dasey that I will write because there is entirely too many of them. Hopefully this one wont be cliché, and it shows a dark side to the pairing of Derek and Casey that I haven't really seen portrayed all that much. Much Love!

TillThatTime

P.S. One-shot, unless requested otherwise.

WARNING: Not for the fluff lovers out there. Dark them. Cursing. Sexual themes. FLAMES ARE TOO AMUSING TO PASS UP.

I'll Gladly Let You Fall

"This is what you do, Derek. You destroy the world until it's as fucked up as you and then wonder why it can't be fixed!"

She screamed those words at him, throwing any object that was in her reach, and when there was nothing left she used her fists instead.

"I pity you, Derek, because in the end you'll only have yourself to blame. In the end you'll be all alone and who the fuck will care then?" Each word shot from her mouth in a fury all their own. They were meant to hurt him, he knew. They were meant to make him think and feel and just give a damn, but Derek Venturi just stared at her with a smile tugging at his lips that never reached his eyes.

He didn't quite remember what he had said to start the fight, nor did he really care. Scathing words had been tossed around like a tennis ball, manipulating the rules of their little game with each harsh insult.

Empty threats and slanders that should never be said had made their way into the full blown conflict and in the end he had broken her. It was a game that he had become so fond of playing over the past few years. He found cold elation in hurting her because the result was crudely pleasant.

He reveled in moments that would work her up like this. He found pleasure in the fact that he brought this out of her, brought her over the edge with one, smug smirk. He didn't love her but he loved what he did her.

She continued to pound on his chest, shouting every obscenity that came to her mind, until he finally halted her with one quick grab of her wrists. In an instant he had her pressed against his wall, and from the closeness he felt her breath hitch.

"What crude words come out of that pretty, little mouth of yours." He crooned into her ear, and without even having to look at her face he knew that her eyes were closed tightly shut.

"No, Derek…" Her voice trembled as she tried to break away from his grasp. He held on more tightly, smirking at her weak defense.

"Ah, what happened to that strong front I heard only a minute ago?" His voice was soft but she had no problems hearing him. He switched her wrists to one hand as his other crawled along the inside of her thigh. Instinctively she arched into him, and he knew that she hated herself for doing it. A smirk graced his lips.

"You really shouldn't talk to me like that. I might get angry at you." He scolds, though both know that his words are a lie.

"You'd have to have feelings in the first place." She said with a sneer that dropped quickly from her face when he clasped his hands quickly onto her waist and pulled her roughly against him, the contact causing her to groan and an almost painful twitch in his groin.

"Do you feel that?" He asked her, his breath becoming shallow as she pressed even further into him. A small whimper escaped her lips and he found glorious self-satisfaction for learning every tick she had, everyway to fuck her up in a sensual, sadistic way. He lowered his mouth to hers, catching her bottom lip between his teeth, but to his surprise, she pushed him away roughly.

"Fuck you, Derek. Looks like you'll be jacking off by yourself tonight." She pulled away from him but he held her fast, his fingers digging into her sides.

" I jack off to a lot of things." He said through gritted teeth.. "Sometimes to filthy magazines that hide under my bed, sometimes to a girl that I passed by on the street, but do you want to know something dear sister?" He said the last words in a less than platonic way, before burring his face in the crook of her neck, his teeth grazing her skin as he spoke. "I always say your name in the end." She felt an all too familiar sensation in between her legs that made her feel dirty and all too delirious to even care.

"I'm with, Sam" She said, in a pathetic attempt that had never worked in the past. She always said these words before they fucked, because in her mind she had the vague hope that saying it would hurt Derek and he would realize just how wrong this all was.

"And I fucked your best friend and didn't even bat an eyelash when I left her to go fuck you." She glared at him then, unwanted tears forming at the corners of her eyes.

"I hate you, Derek." She said in absolute truth and he merely smiled.

"Yes, but you love this." He cupped her breast then, his thumb ran over the tip and his eyes never left hers. "You love this feeling that you can't get anywhere else. Sam would never touch you the way I do, make you arch into it like the slut that I know is hiding under those modest clothes. You hate me, but at least I make you feel."

"Why do you do this to me?" She said in between tears and moans as his fingers slipped down her stomach and past the waistband of her pants.

"Because I want to see what it's like to corrupt the world." He said resolutely before capturing her lips in a brutal kiss. There was no love to be shared in the kiss, because in truth, there was never any love in the first place. Just her need to feel his hands on her skin and his urge to play with fire. Their tongues battled for dominance and his fingers teased her in ways that would make her blush later on in the confines of her room. Lips were bruised by nips of teeth and soft cries were lost in the heat of it all. She hated him through it all and that was the only part of her that he loved.

He began to pull the top of her pants slowly down her thighs, running the tips f his fingers along her skin in the process. He was caught off guard when she pulled away from him suddenly, her breath heavy and her hair tussled around her flushed checks. "No. Not again, I can't let you do this to me again." She told him, her face hard and her voice strong, but her eyes told the real truth. He grinned at her then, pulling her against him one last time, his lips brushed against hers as he spoke, sending shivers racing along her spine. "You'll be back."

She left him standing there with a slam of his door.

He laid in his bed later on that night, waiting. It didn't matter how long he waited because it would always pay off in the end, always. he didn't stop the snicker that seeped through his teeth as he heard his door creak open in the silent air that surrounded him. He felt her body press into him as she crawled onto him. He couldn't see her face but he felt her tears as one fell onto his cheek. He pulled her close to him and began to discard her of her clothes and he knew without seeing that her eyes were closed the entire time, because she wouldn't look at him, wouldn't face the truth that he had completely fucked her up. He would feel shame, he would feel pity, if Derek Venturi felt anything at all.