Hi everyone, Knight Rider Alpha here.

Chapter 8.5 - The M-rated continuation of Chapter 8 from "Always My Heart", as per the rating reader discretion is advised.

Disclaimer: All respective characters and themes belong to their respective owners, Andrew Marlowe and ABC Studios.

As the door closed Castle stood in the dark bedroom with Kate still in his arms furiously attacking his mouth, his hold on the smooth skin of her things loosened and he gently lowered her to the floor. As her heels touched the floor she turned quickly flipping on a bedside lamp bathing the room in a soft and warm glow.

Castle immediately followed his arms slipping around her waist from behind as his lips flew to her neck, Kate's eyes slipped closed as she bit down gently on her bottom lip. Her hand came up as she threaded her fingers in the hair at the back of his head holding him in place.

His hands were not idle.

Kate moaned as his thick fingers slipped across her dress-covered body before she felt the dress knot which held it together get pulled open, exposing her black matching lingerie-covered figure to the cool air of the room. Kate moaned again as she leaned her head back once again connecting their lips, she separated just as quickly and turned in his arms and pushed the suit jacket from his shoulders and the open navy skirt quickly followed both falling to the floor.

Kate's hazel raked up and down and moaned at the sight of his muscled body, who knew that under his tailored suits that mystery writer Richard Castle was so muscled? Well, she was going to enjoy it thoroughly. Placing her hands on his shoulder she kissed him again as her fingers glided down his left arm and squeezed his huge bicep. Her right hand rested on his bulging defined pectoral as she raked her nails down bumping across the ridges of his six-pack below, her hand stopped at the waistband of his suit pants that sat low on his hips as his waist tapered into a v-shape.

"I can't believe you were hiding this" she whispered with a smile referencing his body.

"Mystery is the name is the game, my love" replied Castle with a smirk.

Kate rolled her eyes before kissing the smirk off his face.

Castle responded deepening the kiss as he slowly dragged the red dress from her body, his lips then began kissing their way down her jawline tracing a path down to her neck. But this time going further to her chest as his tongue encircled her bra-covered nipple, Kate sighed sweetly as she felt his lips travel further down she knew where he was going.

But she wanted her turn first.

She grabbed his head with both hands bringing him back up "...you seem to be wearing too many clothes, Mr Castle!" she whispered while caressing his stubbled cheeks with her thumbs while getting lost in his ocean-blue eyes.

"I suppose we should fix that, Ms Beckett"

"Definitely"

Kate's hands quickly opened his belt and snapped open the button of his slacks. Castle quickly pulled them off his legs as Kate took him by the shoulders, she dragged him over to the bed and pushed him down to the mattress his head resting on the pillows. Like a tigress stalking her helpless jungle prey, Kate crawled onto the bed and climbed his prone body. She made contact with his lips and his neck before she kissed her way south marking a fiery trail across his chest, her mouth closing over one of his nipples sucking and biting then dragging her tongue and doing the same to the other.

Heading further south she dipped her tongue into the ridges of his abs and went lower still as she reached the elastic waistband of his boxers, she giggled as she felt his body tremble as her hand caressed his covered hardening length.

"Nervous Castle," she asked with a smirk as her fingers curled just under the elastic.

Castle looked down "Nervous, excited, delirious and overjoyed I'm going to run out of adjectives..." he said but then stopped as Kate interrupted him by grabbing his towering shaft and leisurely stroking him before engulfing the crown and sucking him lightly "Holy..." exclaimed the writer and his mind went blank at the feel of her mouth on him.

Kate's eyes sparkled in pleasure as she hollowed her mouth and proceeded to take him deeper, the feel of him on her tongue, the unique taste of him that leaked from the tip made her weak. Kate was enjoying the moans that escaped his mouth so she backed off leaving only the pinnacle between her lips, raking her nails down his abs and then without warning, she increased her up-and-down motion while stroking him with her hand. The whole sensual routine was sending her wild, with the wetness between her legs growing by the second.

Castle was in heaven, unadulterated heaven. The feel of her mouth against his sensitive flesh was indescribable, but he knew if she continued with her pleasurable ministrations he would finish sooner than he would like. He threaded his fingers with hers and pushed up to a single elbow looking down at the beauty before him.

"Kate...fuck" he whispered.

Kate was torn between wanting to bring him to his climax with just her mouth, tongue and hands and wanting to find out what else he enjoyed. She finally released him from her warm mouth, she leaned up where he met her halfway their lips crashing together as she continues to stroke him slowly.

"Isn't selfish that you're doing all the work?" he said in a hushed whisper against her mouth.

"No! I was enjoying myself" she quipped before she kissed him again.

"I saw, but I want my turn..." he said disconnecting from her lips.

"Well I suppose it's only fair," said Kate rolling her eyes with a smile.

Castle rolled them over as Kate sunk into her mattress, Castle traced a blazing path down her body with his lips as he wasted little time in peeling off her black panties, the lacy material slid down her creamy legs before the Writer threw them into the room. Castle proceeded to leave kisses on her stomach, her hips, and the inside of her thighs pretty much everywhere but where Kate wanted his mouth.

Kate keened as her hips gyrated trying to move his mouth closer to her centre as she carded her fingers through into his hair, Castle felt he had teased her enough, so he placed his forearm on her abdomen to hold her writhing body in place as he lowered his mouth to the apex of her legs.

Kate's eyes widened as she was struck by a lightning bolt of pure pleasure, the frequency of her hip movement increased along with the pleasurable dance of Castle's tongue.

"Holy...fuck...Castle" hissed Kate as she arched her back rapt in pleasure.

Castle smirked at her vocalisation before he refocused his efforts on her centre as he felt her grip tighten in his hair, he felt her grab his free hand and drag it up her chest to her breast, her hand atop his as she helped him massage her soft mound, the action of his fingers against her peaked nipple as he rubbed the delicate flesh of her breast sent another bolt of pleasure up her spine, It was almost too much for her.

But Castle didn't stop as his tongue probed deep then pulled back making small circles with just the tip of his tongue, Kate gripped his hair tightly as her eyes slammed shut and her vision exploded in white light, convulsions racked her body as Castle stopped his pleasurable assault on her senses. He slid his hands under her body holding her close as she came down and back to reality.

Kate was breathing hard a beaming smile across her face. "Holy shit...Castle! That was amazing" she said throwing her arms around his neck as her body clenched at the feeling of his arousal poking her inner thigh.

Castle kissed her "That was merely the tip of the iceberg, my love"

Kate just rolled her eyes before she raised her long legs bent at the knee and clamped them around his waist before she flipped him onto his back and she straddled his waist, Castle's look of surprise was wiped away by a deep kiss, as her hand reached down between their heaving bodies she gripped his straining length and rubbed it against her centre.

"But what about this tip Castle" she whispered.

"I'm sure I'm about to find out" replied Castle with a low chuckle.

Kate giggled and with her palms pressed into his muscled chest raising her almost naked body she sat down on him engulfing his shaft, the naked feel of him inside her was extraordinary, it almost brought tears to her eyes.

"Oh, my God...Kate, you feel unbelievable" Castle cried out as his hands slid up her toned thighs to her undulating hips.

Kate smiled as soft moans escaped her lips she stripped off her bra throwing the garment behind her and leaving her body fully exposed to his hungry gaze "So do you...you feel just as good" she sang in a breathless voice.

Soon the lovers were locked in a fiery embrace as Castle lifted his upper body his muscular arms surrounding her as she bounced in his lap, the new angle sending both of them soaring even higher. She smashed her lips to his once more in an almost brutal kiss addicted to the feel of his mouth on hers, Castle tightened his grip on her slim frame and rolled themselves over pressing Kate into the mattress below, resting his forehead on hers and staring deep into her hazel eyes as he began to increase the rate and strength of his thrusts.

Kate was being taken to places she had never been, feeling things she never felt, experiencing pleasure like never before. She could feel the bloom of pressure in her belly as her fingers framed his face, her nails raking through his hair, arching her back trying to get as close as possible to the body of her lover.

"Oh, God...fuck me, Castle...I'm so close" whispered Kate "Don't stop, please don't stop"

Castle leaned down her words spurring him on as he growled lowly into her ear, he could feel himself creeping to his release he knew Kate just needed just that bit more, reaching down between them his fingers teased her folds finally pushing Kate over the edge.

"Oh...oh...Castle..." exclaimed Kate the words dying into a silent scream.

"Oh...Kate...I'm there..." Castle bellowed reaching his pleasurable peak while inside her.

Coming down from his high he collapsed on top of her his breathing fast and heavy his face buried into the crook of her neck, as Castle tried to shift his weight worried he was crushing the beauty beneath him. But as he tried to move Kate locked her arms around his neck and back, her nails dragging across his skin as he felt himself slip from her depths.

"Kate...I'm too heavy" he whispered.

"No...your not, it makes me feel safe" she whispered back laying a soft kiss against his neck.

Castle smiled at her loving words and actions but he had an idea, once again sliding his hands underneath her body he rolled to the side laying on his back, as he settled into the mattress now with a smiling Kate Beckett resting atop his muscled torso his arms around her body holding her in place.

"You know you were right...all those years ago," he said chuckling "I had no idea, I'm lost for words, Kate...that was indescribable"

Kate laughed snuggling into his bulk "Aren't you supposed to be a Writer or something...words are your thing" she said lifting her head to look at him.

"Yeah well...my brain was rendered to mush by your oh-so-sinful actions, my Love," he said settling a chaste kiss against her swollen lips.

"Well I can admit you did the same thing to me," said Kate releasing a happy sigh.

"I'm not going to lie and say statements like that don't do wonders for my ego" he laughed delicately running his fingers up and down her naked back.

Kate laughed resisting the urge to grab his ear for such a comment, but he was just being Castle and it was just one of the things she loved about him. But she was far from done with him tonight he had become her addiction, just the sight of his body the moment he became exposed to her sent a shockwave through her loins.

Now here she was laying prone across his deliciously naked body their legs intertwined as her hands and fingers began to trace the muscles beneath his smooth skin. Soon enough she reached the damaged skin that marked the bullet's entrance, the bullet that was meant for her. She had never paid so much attention to it but being this close it was hard to ignore, this was a reminder, evidence he would carry forever about his near death at the hands of a sniper.

Her eyes shimmered at how close she came to losing him, never having the opportunity to bask in his love, lose herself in the depth of his embrace, swim in the ocean blue of his adoring gaze. As she was to him, he was to her, everything.

As if by magic Castle knew the thoughts speeding through her mind, he reached up and smoothed down her wild tresses and cupped her cheek.

"I'm here Kate..."

"I know, but this is evidence that I nearly lost you" she cried.

"You didn't lose me, I'll never leave you, Kate!"

Kate leaned down pressing her lips to his in a life-affirming kiss, the heat between them increased as Castle rolled them over. Her tongue demanded entrance which he willingly provided, as his hands travelled around his torso as dragged her nails lightly down his back to his tight backside.

"Make love to me Rick...remind me that you are here...with me, in this bed, at this moment" she whispered.

"Of course...my love"

Pressing her body to the mattress his muscled arms supported his upper body as he slid his reignited length inside her slick depths, Kate gasped at the reestablished connection her eyes slowly closing as stars burst behind her eyelids. The slow drag of him inside her was very different to the first round this was sensual, slow and loving.

But she needed more, more of him. Again it was like an addiction the pleasure that exploded within her from just his slow thrusts was incredible, her hands came up to his chest as she skimmed her fingers over the hard judges of muscle she found there. As she slowly dragged her nails down over his clenching abs, her legs spread wider as she felt him sink deeper into her boiling depths, her eyes dilated as they opened the fire within climbing ever higher.

"Oh, my God...Rick...I love you" Kate said arching her back "Please don't stop..."

Castle's breathing quickened as he focused on the movement of his hips, the feeling was all-encompassing he felt surrounded by her. This deep connection they shared only increased in moments like this. This was true love, this was soul-shattering earth-shaking love and for the second time tonight, he felt a knot of pressure build in his low in his pelvis looking down at the beauty beneath him it still amazed him to see her like this locked in the pleasure he was providing.

He reached down between the moving bodies and planted his fingers on her mound, teasing her and finally pushing her over the edge in a silent scream as her body spasmed. Castle gave one final thrust before he collapsed on her body once more, breathing deep pushing air into his depleted lungs.

"My God...I think that topped the first time" he whispered still breathing deeply.

Kate smiled as she threaded his fingers into the hair at the back of his skull, this was certainly an otherworldly experience and one she already looking forward to repeating. But now creeping tiredness was starting to settle in along with a pleasant soreness, this would be a night she would never forget for as long as she lived. She pressed her mouth to the side of his neck sucking on his pulse point lightly, she loved him and he loved her, it was reaffirming moments like this that remind you why you are alive.

Castle's weight shifted as he lay down beside her his breathing had slowed, he collected Kate and she settled onto his chest her ear settled over his heart the gentle thud beneath soothing her. As Castle dragged the comforter covering them both, Kate sighed wistfully she had never been this comfortable in her life.

"I love you, Kate," said Castle kissing her forehead.

"I love you, Rick" replied Kate snuggling into his shoulder.

Soon sleep engulfed them both almost as soon as the bedside light faded, they remained that way until morning came as they woke up still in each other's arms.

Always.

(Break)

Well, I hope you enjoyed my first adventure into Rated-M territory, I know I did. (wink)

This is 'Knight Rider Alpha' signing off.