Written for airbefore's kink meme on livejournal, winter 2012.

Prompt: This photo ( 25 dot media dot tumblr dot com/tumblr_melka3odIS1rmzel7o1_500 dot png)

"Oh fuck, oh fuck, Castle – "

Kate struggles against him, desperate, but he's got her pinned, his knees pressing her legs apart. Her wrists are trapped above her head, twisting under his grip as he wrestles her down. "Oh yeah, Kate. Yeah," he growls in her ear, his chest pressed against her back, the length of him heavy against her bare skin. She likes it when he's rough. He likes it when she fights back. She spends all day in control, and there are nights when she needs him to just push her down and take her. Because sometimes they make love but sometimes she just wants him to fuck her from behind.

He grips her hips tightly and slides into her and she chokes out his name, her hands fisting in her pillow as she writhes against him. It's tight and thick and he's not gentle. Her back arches, the change of angle making her eyes roll back as she moans. He thrusts into her hard, filling her, hot and hard and so overwhelming she can't breathe. She digs her toes into the mattress, vaguely registering the raw animal noises escaping her throat as his fingers slide over her hip to draw tight circles over her clit

"Castle – " she gasps, rolling her hips against him, taking him in deeper – "Castle please – "

His fingers are pinching her nipples, his tongue tracing wetly at the shell of her earlobe, and oh fuck oh fuck it's too much, too hot, he's so big draped over her and he's so massive inside her and fuck fuck fuuuuuck –

He drives into her again and again and again and she breaks apart. Her orgasm rips through her as she muffles her screams in her pillow. His body goes rigid above her as he spills into her, filling her with hot spurts as he chants her name into her skin.

It takes her a long moment to realize he's rolled off. He's lying beside her, brushing her sweaty hair off her face. She smiles gently, nuzzling into his touch. "Hey there, stud."

"You okay?"

"Mmm. Yeah."

He rubs her back gently, lulling her closer to sleep. He wears her out. "Kate?"

"Mmm." She's tired and glowing and blissfully sated. Barely awake.

"Will you let me drive to the precinct tomorrow?"

She hums. "Not a chance."