A/N: This is the final chapter. I want to thank everyone who has stuck around for this entire story and those of you who are new but still reading Castle fanfic. This story may be complete but I do have a couple other non-Castle things in the works and still intend to rewrite Return to the Fold so that I can hopefully finish that story. Enjoy, and let me know what you think.

"You're hot for Castle. You want to make little Castle babies." the words played themselves over and over in her mind as Beckett lay in bed that night.

It had been her suggestion that Castle go out with Maddy try to get more information for their case. She just hadn't expected the twisting in her gut she'd feel when she saw the two of them moaning over their plates. Hell, she still had the love bite he'd left on her thigh during their tryst on his couch a couple days before.

"I heard everything."

The look he had leveled her with was enough to send a rush of heat through the pit of her stomach and south of her belt.

As if that wasn't enough, he had to find that damned ring in the cake. Even though she had turned him down, Demming was still hanging around and had proven to be useful. He gave them a lead on a bookie which lead back to Wolfe's kitchen where they had found it.

The ring itself was inconspicuous, a solitaire diamond on a simple gold band, but the look her gave her as he offered it to her was anything but innocent. Castle may not have been on one knee but his eyes were full of the same heat she had felt earlier in the precinct when he reminded her he knew what her friend had said.

Was she really jealous of Maddy? She wondered to herself.

As she lay in bed she felt the heat again. The desire, she finally admitted to herself. Her actions over the past weeks flashed before her mind's eye. The way she had brought herself to orgasm while he watched. How the weight of his cock felt against her tongue that dark night she crept into his bed. The feel of his fingers between her legs when she parted her legs to give him access.

She felt herself grow wet as her body reacted to her memories. Beckett squeezed her legs tightly together, trying to ease the ache that had started between them, but it wasn't eased.

She remembered the way his tongue had felt against her heated flesh and the ache grew stronger.

Dammit, she wanted Castle. She slapped the bed beside her with her palm as she finally admitted to herself.

Filled with determination, Beckett sat up and swung her legs over the side of the bed so she could stand. She was wearing only a tank top and leggings, her normal bedtime attire, but knew Martha and Alexis had gone to bed hours earlier, as had Castle.

Putting the other women of the Castle household out of her mind, she left the guest bedroom and walked down the hall towards the stairs where she came to a dead stop.

Castle looked as surprised to see her standing at the top of the steps as she felt seeing him with one foot on the bottom step in nothing but a pair of boxers.

A different kind of warmth filled her chest as she realized that he had come to find her too.

He didn't move as she slowly descended the stairs until she was one step above him. Without her heels he normally stood several inches over her, but with the aid of the step they were nearly the same height.

"Beckett?" he broke the silence, her name clearly a question as he looked into her eyes.

"Shut up Castle" she growled, closing the remaining distance between them and capturing his lips with her own.

Time came to a stop as they kissed for the first time, a realization not lost on either of them after everything else they had done recently.

It wasn't gentle as Beckett nipped at the bottom lip that she sucked into her mouth before soothing it with her tongue.

Castle's arms came around her, one at her shoulder and the other at her waist, but it wasn't long before both hands had migrated to her ass.

She granted the request of his tongue as he slid it between the seam of her lips to begin exploring the cavern of her mouth. His groan reverberated into it when he squeezed her ass in his hands and pulled her hips against his own.

"Bed Castle" she gasped against his lips.

His only response was to move his hands to her thighs until with a little jump she wrapped her legs around his waist.

The move brought her soaking core against his straining erection and Castle felt his knees wobble. Refusing to drop her, he walked quickly through the living room and his office until coming to a stop at the edge of his bed.

Beckett had been doing her best to distract him, running her fingers through his full head of hair and sucking and nipping at his neck on the journey through the loft.

She yelped when he dumped her onto the bed but was too distracted by him following right behind her to comment further.

She stretched out beneath him as he hovered over her staring at her with wonder. Her dark hair framed her face against the sheets and he took a moment to thank whoever was listening that this was finally happening. He was finally going to have sex with Detective Kate Beckett.

Impatient, Beckett reached for his boxers and shoved them down his hips. He chuckled and bent to press his lips to hers again as she freed his erection. He easily gripped the bottom of her tank top and slowly raised the material up her body, revealing her breasts to his gaze for the first time, until he could pull it off over her head. He abandoned her lips and instead attached himself to her left breast. His lips surrounding her nipple and sucking it into his mouth to be lathed by his tongue as fingers toyed with the dark bud on her other side.

"Castle" she moaned, pushing at his shoulders until he popped off her nipple with a grin. She glared at him. Now was not the time for teasing, she wanted more and he knew it.

His calloused fingers closed around the waistband of her leggings and he easily pulled them off, noting that once again she wasn't wearing underwear.

As much as he wanted to taste her again, he knew Beckett would never stand for it so instead he spread her legs apart and took note of the sticky fluid coating her lips and inner thighs. He knew he should grab a condom but he knew the sound of her pill timer and he wanted, no, needed, to feel her skin against his so without further thought he took himself in hand and placed himself at her entrance.

Castle couldn't resist teasing her a little as he rubbed the head of his cock up and down against her until her eyes popped open to glare up at him. The smile he gave her was genuine as their eyes met and he pushed forward entering her for the first time.

They groaned in unison at the feel of finally being joined. She was so hot and tight around him that Castle knew he wouldn't be able to last.

Beckett felt the delicious stretching of her inner muscles as he pushed into her until his entire length was seated inside. She knew he was big after the last time she had been in his bedroom, but what she didn't know was how perfect he would feel inside her, like a puzzle piece finding it's match.

Castle didn't stop when he was fully sheathed within her wet pussy. He pulled out and thrust roughly back in without giving her time to get accustomed to his size and Beckett gripped the sheets tightly as she whined in response.

If their first time was going to be quick, he'd at least make it memorable. Castle decided as he pulled almost entirely out and then pushed quickly back in. He soon set a punishing rhythm. The wet slap of their skin meeting again and again was punctuated by moans and sighs as Castle fucked her. One hand pawed at her breast as the other dropped to where they were joined and pressed tightly against her clit.

Beckett keened when his thumb began rubbing on her clit, the rest of his hand pressing down on her pelvis so hard that she was sure he must be able to feel his own length inside of her. She had always expected that their first time would be wild and passionate and the slick slide of his cock within her body as he pounded into her seemed to have proven that correct.

"Fuck" she swore when he shifted his legs and changed the angle of his thrust slightly, his cock now angled upward and making her see stars.

"Come for me Beckett" he growled into her ear, leaning over her and biting her neck as his thrusts grew sloppy.

Her arms that had been wrapped around him tightened at his words and she choked on a scream when he bit her triggering an earth shattering orgasm.

Her inner walls clamped down on his cock, pulsing as she came and Castle couldn't hold out any longer. Plunging as deep inside her as he could, he let go with a groan, spraying his load deep inside until her tight pussy had milked every last drop from his shaft.

He hoped he wasn't crushing her as he collapsed on top of her, both breathing heavily as if having just run a marathon.

"Well that was something" she was the first to break the silence, raising a hand to brush a lock of sweat dampened hair off his forehead and out of his eyes.

His only response was a chuckle as he realized that he was still semi-hard inside of her.

He didn't know what this meant for them or where they were going but after nearly two months she was still living under his roof and now she was here in his bed and Castle couldn't help but be hopeful that this was the start of something great.

They kissed softly for long minutes, hands roaming over one another's body as Beckett delighted in his weight pushing her into the mattress. She felt safe there and knew this would not be the last time that she found herself in bed with the man that she considered to be her partner.

He was good for her, she knew, and as she felt a stirring of his cock still nestled within her walls, she was excited for what the future held. But this time, she was going to be in charge, she decided as she flipped them and began to grind down onto his growing erection.

'She really will be the death of me,' Castle thought as he stared in wonder at the dark haired beauty grinning down at him as she straddled him, 'but what a way to go.'