Back to Castle again to tell the story. He's not feeling all that coherent, but here we go. There will be at least one more piece to this story, but again, I work ridiculous hours and it may be up to a week before I can update again. I know a few of you were hoping for a threesome, but I just don't see Castle being able to handle that at this particular point in the game. On with the frivolous smut…

Kate was already opening the door to her apartment when he caught up. He couldn't catch his breath and his heart was hammering in his chest and part of him just wanted to grab her and demand, "What the hell is going on with you?"

But then her apartment door was open and he found himself shuffling in behind her, her scent swirling in his nostrils. She was the Birthday Girl and he was supposed to be giving her what she wanted. He slammed the door closed behind them and managed to find the deadbolt before his hands found their way into her hair, tugging her lips to his. To his surprise, his lips landed on her cheekbone, skimming up over her brow as her head bowed down. Her lips eventually found his chest, pressing kisses against his shirt that sear through to his skin.

He vaguely remembered something about rules, but none of them answered his questions. All those "W" questions that capture his mind seemed to evaporate in her presence, even more so when the presence of her tongue on his neck sent him clutching for anything, any part of her that he could lay claim to. First he found her shoulders, then her biceps, then her waist where the fabric of the dress gathered and crumpled and he could feel the heat of her skin seeping into him through his fingertips.

He didn't realize that he'd tried to speak until she's shushing him, whispering words about later, and I know, Castle. I know. Her eyes were swimming pools of amber and green, begging him don't stop. He was certain that he was going to wake up at any moment and find this was all just a very, very hot dream, and he was left only with the option of trusting her.

When she began to pull them further into her apartment, he was still trying to catch up, nearly tripping over her feet as she drug him (she's going backwards and she's in high heels and he's the one stumbling into her, making his teeth bump against her throat and his fingers clutch – none of which seem to meet with her disapproval) until she hit her kitchen counter with a little moan that pressed her air into his mouth.

"Kate," he gasped, passing her breath back to her as her tightly wound body bends back over the counter, thrusting her hips against his throbbing erection, making her breasts jut upwards against his chest, forcing him to tear one hand away from her waist to grip the much more stable counter. His mouth pulled back, dragging downward to her cheekbone once more. "You've still got some… glitter…"

The joke made her giggle, little puffy breaths against his lips, her cheeks catching fire as he sucks the sticky spot, then took control of her mouth. It's all frenzy and no control but she just kept giggling of all things as he sucked away the taste of sticky lip gloss and body glitter and that candied smell that seemed to be so completely tangled up with the smell of her arousal and her hair. Her lips opened, letting him in deeper and he almost didn't notice how quickly she managed to leave his shirt and pants hanging wide open while she remained fully dressed.

She pulled back with a smirk, flushed and looking so damned good for someone still so very dressed. He immediately moved to fix the situation, grabbing at the hem of the dress and tugging it upwards, making her smile as she lifted her arms to let him undress her. Kate Beckett was letting him undress her in her kitchen and she tasted like tequila and vodka and something citrusy sweet and he couldn't help but wonder, just how much did she have to drink.

"Shut up, Castle," she muttered then, as if she could hear his thoughts, tossing aside the dress and giving him a little shove backwards. He stumbled back and he stumbled out of his shoes and his pants and his everything as he tried to memorize the lines of her body, framed only in those lacy panties. "You wanted a chance to look earlier…"

Her voice was rough, rasping along his skin like a caress as he took her in, trembling, nearly losing it at the sight of her scars. But she caught it, the little shiver, and pushed off the counter, her hips giving a little extra sway to draw his attention downward, those black boots taunting him as she stalked towards him. Then the glitter on her skin drew his attention completely.

Biting down on his lip he leaned into her, dragging his fingers across the glittering spots of light that reflect off her skin, highlighting her thighs in the dim light and drawing his attention until he was tempted to fall on his knees and taste her. But Kate had other plans.

Her small hands, so surprisingly strong and quick, took hold of his wrist and soon had him laid out on his back on her couch, his knees bent up awkwardly. He must have been talking again because once more, she was shushing him with her finger to her lips as she shimmied her way out of her boots and then her panties and before he could follow her movements, she was straddling him, the wet heat of her center hovering dangerously close to his stomach.

The smell hit him hard and fast, leaving him dizzy as she planted her palms beside his head, leaning down to drape her hair like a curtain around their faces. His body shuddered as her breasts brushed against his bare chest and her lips dipped lower, dropping teasing kisses along his brown, then his nose and cheeks and when she finally found her way to his lips, her hips slipped down until he could feel the wetness of her pressed against the hardness of him, making his body jerk in reaction.

But her lips were lingering, just barely brushing his, and he could feel rather than see the smile that was gracing those smooth, soft lips. He opened his eyes, which hadn't realized he'd allowed to close, finding her eyes so close to him that at first they refused to come in to focus. "You know, I thought this was just going to be a little revenge."

He couldn't help but chuckle at her. "I knew you couldn't resist me," he teased back, watching the dance of her eyes over his face and the slight, slow rocking of her hips against his cock.

She nipped at his lower lip roughly then, tugging back in revenge until he had to wriggle away. His lip felt swollen and stung from the contact, but she was grinning so wide that it was spreading to her cheeks and he'd happily take that punishment again if it meant he'd get to see that again. "Maybe I just decided you were ready for a new layer of the onion.." she retorted, her eyes crinkling in amusement as she settled her lips against his, soothing his lower lip with her tongue until he could only think about the throb of his hardness, intensifying with each little shift in her weight against him.

He heard himself groan as she recognized his discomfort, his need, her hips slowly sinking back, pinning his cock between his thighs and her slit. Her back arched, dragging her breasts against his chest once more and he shuddered, fists clenching against the couch.

Her eyes darkened as she slipped her hand downward, taking hold of the base of his cock and sending his head swimming. She was talking but nothing could get his brain to cooperate and interpret the words that were escaping her lips. He caught them in snatches as her hand began slowly stroking him, pressing the length of his cock against her wetness until both were slick and so very ready… inside me… aroused… fuck… fuck… fuck… touch me.

The words weren't registering and her hand was sliding so smooth and slick and tight on his cock, his climax coming so close until she repeated the words again and again. "Castle, touch me. Please… Touch me, Castle."

She gasping so hard he can feel the heated puffs of breath on his face and finally he realized that his hands were still clutched on the couch where she'd left them and he reached for her – he found her knees, then climbed her thighs and her hips and her back, then came around to the front to find her breasts. Her body arched upward, settling herself vertically over his hips, his hands still cupping, claiming her breasts. His mind was distracted by the marks on her skin – the mix of stray glitter and hickies and faint drag marks from his nails that he didn't remember leaving, but they're there – when her hand finally managed to guide him into her. He was barely aware that he was inside of her before she was sinking down, head thrown back, her ass sliding along his thighs as she began to slowly ride against him.

He was talking then – finding every possible way to describe her body that involved the word fuck because the sound of it made her eyes catch his, made her look down from his lofty place to see him as he told her she was fucking beautiful, fucking good, fucking gorgeous, and so damned fuckable.

When she came, she was smiling down at him, her lower lip gripped between her nearly ferociously as leaned down just far enough to let her hand caress his face as her body tightened and jerked and somehow opened to him as she moaned. She was still vibrating with it when he came inside of her, still lost in the sensation of her hand caressing his jaw with the smell of her own sex lingering there.

For several long moments, they continued to rock together, trying to catch up with the lack of oxygen and the tingling nerves and the realization of just how damned good it all felt. As they stilled, she leaned forward, pressing her chest against his own to lay across him and he could feel just how hot her skin was, how damp with sweat and exhaustion it had become.

His eyes lolled shut as he reveled in the feeling of her there on him, her lips resting near his ear and his face completely covered in all of those brunette curls.

"I think someone ran out of words," she whispered suddenly, the smirk smearing across his ear as she giggled once more. He was fairly certain that he was never going to get over that, a giggling Beckett. The feeling tickled along his skin and he opened his eyes to find her looking at him.

"Huh?"

"Surely you could come up with something a little more imaginative than fuck," she managed to get out the line before she rolled her eyes then resettled herself so that she was draped on her side, half pressed to him, half leaning into the back of the couch. "You are a writer after all."