The door shut behind them and immediately Kate found herself pinned against it, her body trapped against Castle's, pressed so close she couldn't tell where she ended and he began. He kissed her aggressively, pulling her hips against his, the sudden, delicious friction making her gasp. "Do you have any idea how long I've wanted to do this?"

She didn't know, though the thought crossed her mind that it might have been almost as long as she'd wanted him to try it. But she didn't speak, just sank against him, shuddering as his hips rocked against hers, shoving her harder against the door, every breath pressing her chest tighter against his. He bent to kiss her throat, sucking at thrumming pulse point, making her shiver, and his hands tightened on her hips, his thumbs under her shirt, tracing distracting patterns on her sides.

"God – Castle – "

His lips slowly traveled over her skin, and she gasped as he bit softly before soothing the spot with his tongue. "You like that?"

" – yes – " she breathed, her hands flexing weakly on his shoulders.

He sucked harder, feeling a heady rush as she sighed, her body falling slack against him. He pushed her into the door, swallowing her gasp, groaning as his lower body drove into hers. The rush of hot arousal hit him like lightning, the way she moved against him, the way her body fit his. His leg slid between hers, and she ground herself against him, a helpless whimper escaping her lips. Oh, Kate. He'd never seen her like this. So warm. So eager. So giving. She wanted him.

God, it was a turn-on.

He wanted to hear her say it. He wanted her to say it over and over and over again. To gasp it. He wanted her to beg.

"Kate – " he growled, catching her earlobe between his teeth – "Kate. Tell me what you want me to do."

She took a deep breath, her chest pressing against his.

"Take me."

His breath caught in his chest, and for a second he couldn't breathe. Couldn't think. His hands tightened in her waist, and he kissed her slowly, memorizing the shape of her mouth, her tongue, the taste of her breath. "Kate, if you want me to slow down, if you want me to stop, you just say it."

"I know."

He quickly undid the last few buttons on her shirt, throwing it to the floor. Kate reached for the clasp of her father's watch, but he stopped her, taking her wrist gently. "Let me."

She watched, dry-mouthed, as he pulled it off, set it carefully on the nightstand, and pressed a kiss to her wrist, sucking lightly at her skin, the caress so subtly erotic it made her tremble. She swallowed, starting to feel lightheaded from the swirl of heat tracing through her veins.

When he tugged lightly at her tank top, it took a second for her mind to catch up. She raised her arms silently, holding her breath as he slowly tugged the tank top up and pulled it over her head. It slipped to land beside them, and then his mouth was on her again, kissing her neck, her shoulder as she tugged impatiently at his shirt, finally managing to unbutton with shaking hands it so he could shrug it off and it joined hers on the floor.

Castle carefully lifted her necklace over her head, setting it beside the watch, and finally, finally, he walked her backwards until her legs hit the bed. She fell back, landing on the soft comforter, her breath catching as he lowered himself onto her, his eyes dark and dangerous. Hungry. Greedy.

She let him undress her, slowly stripping off her clothing as she shivered, her eyes half-open, her breath coming faster every time he touched her.

His mouth went dry as he finally saw her, naked, long and slim and pale beneath him and oh God she was more perfect than he'd imagined (and oh, had he imagined), and he couldn't stop himself, kissing her harder, pressing his body into hers, settling between her knees easily. He felt her feet digging into his calves, her muscles taut, and the breath that caught in her chest escaped as a helpless sigh.

His kisses were demanding, his tongue plundering her mouth greedily, his fingers digging into her hips. Rough. He was rough and aggressive and strong and she'd never thought she'd like it but the way he was touching her, pushing her, biting her – oh God it just made her so hot she couldn't breathe, the blood rushing through her veins, a wave of arousal surging through her bloodstream like liquid fire. He pinned her hands over her head and she arched against him desperately, letting out a breathy moan.

"Oh – oh God oh Castle – please – "

Her words broke off into a long keening cry as he sank into her with a deep groan, gasping her name against her throat.

Her breath came hot and fast on his neck, her fingernails digging into his back. Oh God Kate.

He gave one final thrust and felt himself spilling, erupting violently, like he was exploding and burning and couldn't breathe as she tightened around him and cried out helplessly.

Oh God Kate I love you I want you I want all of you forever always everything I'm yours.

The spasm rolled through her, her whole body white-hot, and she cried out, gasping, every muscle clenching so hard she couldn't breathe. Oh God Castle I love you. I love you I love you I love you.

Marry me.

Please love me.

Kate slumped back into the mattress, boneless, limp, exhausted and sweaty. Her heart hammered, her skin buzzing with satisfaction, every inch of her body sated and glowing. She felt the mattress dip as Castle rolled over, his chest heaving just like hers.

"I – just – God." He let out a helpless noise. "Amazing. Just – wow."

Kate woke up some time later to find Castle gone, the room still dark. She heard voices from the living room, soft and muffled.

A few minutes later the door opened, a sliver of light falling over the bed before Castle shut it silently, setting aside the robe he was wearing, pulling back the covers and sliding gingerly back into bed beside her.

"Very smooth," she murmured with a grin.

He flinched, obviously not expecting it. "Oh, sorry. I didn't know you were awake."

"I didn't realize you left. Were you in the living room?"

"Well, the ice cream was more or less melted, so I put it back in the freezer." Kate blushed a little, biting back a smile. Good ice cream. She hoped it would make another appearance. Maybe in the bedroom this time. "And I heard the front door, so I went to check. Alexis just got home."

"Does she know I'm here?"

"Yeah. Your jacket's still by the door. She figured it out."

Kate propped herself up on one elbow, tugging the comforter up over her chest. "Are you okay with that?"

He smiled. "Yeah, I am. This isn't some dirty little secret, Kate. I'm not ashamed of you. Being private is one thing, and we'll figure out how we want to handle it, but my daughter's comfortable with you and that's something I want."

"Good." She smiled, pressing a quick kiss to his lips. "Though I don't know. I kind of like the whole 'forbidden' thing."

"Don't worry about that, Detective." He started tracing his hand up her arm. "We can still make this feel forbidden. I plan to do lots of very, very bad things to you. Now where were we?"

"You were about to make me forget my own name."

Castle grinned, leaning over her, pressing her down into the pillows beneath him. "Right. Better get started on that."

"You know – " she pulled him down, till her lips were right against his ear, her breath on his skin – "my cuffs are still in my jacket."

Castle's eyes widened, and he was up off her so fast she couldn't help but laugh. He grabbed his robe.

"I'll be right back."

END

Author's Note: As always, my love to you dear readers.

If you want even MOAR of the Sexy, the wonderful chezchuckles and Sandiane Carter and I have started co-writing a fic which is basically just Castle and Beckett getting really, really sexy. It's called "Bringing Sexy Back," and you can find it under chezchuckles' profile. Go take a gander.