Disclaimer: Nope, I don't own the characters.

"You hung up on me. You had phone sex with me, I told you I loved you, and you hung up on me! Can you imagine my dissatisfaction with this? I was writing and minding my own business when you texted me and informed me that I needed to be punished. I believe you called yourself Mistress Heat. Sexiest thing I've ever heard. After getting me to strip out of my clothes, you do things to me that I...I...God, Kate, nobody has ever turned me on like that before. You were extraordinary and so hot. And, I want you to know that I have never had phone sex in my life! So, what do you do? You hang up on me! If there's anybody here that needs to be punished, it's you, and I intend to do just that. By the end of this night, you're going to be mine in every sense of the word. The thing is, if you think about it, you know you want this. You're going to beg me to make love to you. You're going to come for me, Kate. You're going to come undone for me and scream my name. Understand?"

Kate's breath caught in her throat, and she swallowed hard as she felt her knees go weak...

Just as Kate started to slide down the wall, Rick caught her shoulders with his firm, strong hands and pulled her back up so her face was only a whisper away from his own. Their eyes locked, and Kate was frightened to see that Rick's usually blue eyes were dark with lust and need. He savagely took her mouth again, wildly kissing her, just like the little vixen deserved. He smirked when he noticed she wasn't fighting him, although she was trembling and breathing rather heavily. He felt her shiver as he slid his hands slowly down her sides and to her hips. He cupped her bottom and lifted her up against him and into him. His desire was undeniably evident as she melted deeper and deeper into him.

Then, something became different between them. An intense, animalistic longing awoke and grew in power. He kissed her more deeply and viciously, his need mercilessly driving through her. She responded back in kind. The power flourished and ripened between them until they were both aching with it.

Rick suddenly stopped kissing her and pulled away, and they both gasped for breath. His breath was ragged as his dark eyes travelled up and down her body, his gaze manifesting the hunger that his body was throbbing with. He licked his lips as he fiercely ripped her t-shirt off and threw it on the floor. She gasped and tried to cover herself, but in one quick move, he pinned both of her wrists over her head with his hand. "Oh no you don't." he smirked. Her head spun as he lowered his head and caught one of her nipples in his mouth. He flicked it with his teeth and then wildly licked it with his tongue. He heard Kate whimper underneath his advances. After he finished with one nipple, he turned his attention to the other. He eagerly took it into his mouth and sucked it until she writhed in agony and need. Then, his mouth abruptly abandoned her breast and sought out the heat of her neck. She could feel his hot breath next to her ear as he whispered, "It's almost time, Kate. Tell me you want me to make love to you."

Kate moaned as he placed hot kisses on her neck, using his tongue as well as his lips. He took his free hand and slowly slid his fingers under the lacy elastic of her boyshorts and into her heated center. Her breath caught in her throat, and he noticed she was swollen and wet with want. "Say it, Kate," he growled. He pulled his fingers out of her slippery folds, and she begged in agony, "Please, Rick…"

"Say it now, Kate…" he hissed.

Very quietly he heard her whisper, "Please make love to me, Rick."

He bent down and claimed her mouth, parting her lips forcibly with his tongue. She responded by grinding her hips into him and wrapping her legs around his middle. She felt his enormous throbbing hardness against her dampness and grinded even harder into him. She heard a guttural moan escape from his throat. "Not here. Not like this," he muttered.

He slid his arm under her knees and scooped her up into his arms. He took her into her bedroom and gently laid her on the bed in front of him. She was beautiful. Her brunette, long curls framed her face, and her breasts glistened in the moonlight. The lace on her lavender boyshorts protectively hugged her curves. As her sultry green eyes watched him, he unbuttoned his shirt and threw it onto the floor. He also unzipped his jeans and slipped them off, along with his shoes and socks. After he finished, he saw her tremble, her eyes wide with anticipation and fear of what was to come next.

"You're mine now, Kate," he growled huskily.

While supporting himself with both arms on either side of her, he bent down and she could feel his hot, ragged breath on her stomach. He kissed it, gently using his lips and his tongue, while slowly forging a trail from her navel to the lace of her boyshorts. Without removing them, his teeth bit into the fabric, and she could feel his warm breath against her clit. She writhed with want and arched her hips up to his mouth. He responded by sliding two of his fingers under her lace and slowly into her burning center. "Oh sweet Jesus…" she hissed.

Rick momentarily stopped sliding his fingers in and out of her to smirk and grumble, "The name's Rick, not Jesus."

To punish her for this, he moved more of the lace aside, and his fingers parted and explored her. She opened herself to him, and he circled her clit with his tongue before flicking it erotically with his teeth. A guttural moan involuntarily escaped from her lips and she arched into his mouth. Waves of pleasure swelled and consumed her with need. As he continued, his fingers intruded deeply into her throbbing center again, stroking back and forth rhythmically. When he felt her tighten and start to contract under his fingers, he abruptly stopped and moved up her body capture her frustrated moan with his mouth.

"I can't allow you to come. I haven't heard you scream my name yet, Mistress Heat," Rick smiled wickedly.

"Oh my God…" Kate moaned.

"No, my name's not God either, even though I may be one," he smirked. "By the way, in case I forget to tell you later, you are the sexiest, most beautiful woman I have ever made love to. Oh, and I rather enjoyed punishing you as well."

Before he knew it, Kate was on top of him, hot and heavy. She roughly kissed his lips and then moved on to explore his neck and chest with her tongue as well. Her hot breath and warm lips sent shivers up his spine. As she made her way down to his boxers, he stopped her. "Oh no, Mistress Heat. You've already punished me enough. Your turn."

It was time. He wanted to possess her and brand her as his own. A primal instinct overtook him, and he rolled her over, pinning her under him. He possessively brought his lips to the pulse point on her neck and kissed and then bit and sucked her there. When he was done, he had deftly marked her as his own.

Even though she was pinned, she was a willing captive. He drew back from her neck and lips because he wanted her to realize and be aware of what was happening between them. He removed his boxers and then slowly slid down her boyshorts. He smiled evilly, "I'll be keeping these."

He bent down as if to kiss her, but didn't. He looked deep in her eyes and held her gaze captive. She could feel his warm, ragged breath against her lips as he said, "Tell me you want this as much as I do."

"I want it more," she whispered as she hungrily claimed his mouth and ran her fingers through his hair. He was caught up in her wild desire as he growled, "I seriously don't think so."

She could feel his enormous, throbbing erection pressing against her thigh, and she opened her legs and grinded up against him until its head was pulsating against her clit. He responded by thrusting downward towards her wet, burning entrance. She tilted her hips up to urge him to take her. His tip finally pushed against her velvety center, and he slowly slid into her, stretching and filling her up completely. She moaned, "Oh God…I mean, Rick…" She was so slippery and tight. He groaned in pleasure as he slowly pulled back out to her entrance and thrust deeply back into her, again and again and again. Just as he felt her start to tighten more and contract again, he pulled out completely, which caused her to scream his name in frustration.

"You can't come for me yet, Kate. We need to do this together. Okay?"

He gently bent down and brushed his lips against hers as he noticed the wetness surrounding her eyes. "Okay," she softly agreed.

He softly kissed her again and then pushed deeply back into her as he heard her gasp. Her reality quickly became the heat of him deeply pushing into her center and slowly pulling out. She quickly found his rhythm and matched him stroke for stroke. At the same time, his lips claimed hers, and his tongue reflected the fire their bodies were generating. She was hot and tight, and she could feel him throbbing and swelling within her walls. She arched her back and struggled to breath. She urged him to go deeper, faster, harder. He gave her what she wanted, and she took it and continued to match him. As the heat between them grew and intensified, she raked her sharp nails down his back. "Please, Rick…More…" she screamed.

He cupped his hands over her ass cheeks and pulled her closer to him. As he kneaded her ass, he thrust deeper and harder into her, again and again. "Come for me, Kate. Come with me."

When she heard his words, her insides exploded, contracting, clenching, and pulsating around him. He shattered in a climax so intense that he thought he was going to lose his mind. As his seed scorched though her insides, he lost himself completely in her. Her heat claimed his very soul. As shared feelings of pleasure coursed and waned through them, their heat was gradually replaced with an all-enveloping tender warmth.

He held her to him for over a half hour before either one of them spoke.

Rick tenderly ran his fingers through her hair as he whispered, "Kate, I don't want you to run away from this because it wasn't a mistake. You wanted this just as much as I did. This doesn't have to change anything. I'm still Rick, and you're still Kate. We're still Castle and Beckett. We don't have to tell anybody, and if this never happens again, I'll be disappointed, but I'll survive. No matter what, we'll still be partners and friends. Always. I'm going to hold you until you fall asleep. Then, I'm going to quietly slip out and go home because I don't want to overwhelm you or ruin this with a lot of awkwardness between us in the morning. Someday, I will wake up with you in my arms, but not today. Oh, and by the way, even though you may not be ready to hear this, you need to know that I do love you, Kate. I have to make sure you know this because I want you to know how much this…you…mean to me. You are not a one-night stand." He smiled and added, "Best sex ever, Mistress Heat."

He barely heard her whisper, "I need you too, Rick," before she snuggled closer into him and drifted off to sleep.

So, I hope you all liked it. I've been thinking a lot about this story and have some definite ideas about where I want it to go. If you want me to continue, please review and tell me, so I know if there is enough interest. THANKS SOOO MUCH FOR ALL THE WONDERFUL REVIEWS AND ENCOURAGEMENT SO FAR! You guys definitely inspire me! It may be a few days before I post another chapter because I'm going to be really busy. I think Kate should take turn the tables and be the aggressor next. What do you think?