A/N- This chapter is quite long. And we are travelling into the M-Rated portion of the story. It's the first time venturing into this territory and well...I hope it's not too bad... Definitely M Rated so be warned!

Castle couldn't help but kiss her during the entire ride home. He was finally free to love her again and she was accepting of that love. He cupped her chin with his fingers and drew her face closer as he leaned down, pulling her to him. She was powerless to resist him, even if she had wanted to. Castle's eyes stayed on hers, searching for the emotions that were surging through her, wondering if she could see the desire and hope in his eyes. The moment their lips met was more beautiful than any other moment in his life. With the exception of the day that Alexis was born.

He kissed her softly and cupped her stomach. Afraid of all the emotions running through him. Today had been a whirlwind day. Both emotionally and physically. He loved her and he already loved this baby that she carried. He let his thumbs gently caress her stomach and then whispered, "I was so scared of losing this. Losing you..."

Kate was confused and turned around to look into his eyes. She asked softly, "What are you talking about?"

Castle sighed and whispered, "I was afraid that Josh was going to back out of the divorce. Afraid that he was going to ask you to go back to him. I don't think I would have been able to let you go again. Not when there is so much to lose. Not with you pregnant with your baby..."

Kate shook her head and took his hand and guided it to her stomach. Then she whispered, with so much emotion in her voice, "No... It's not my baby. It's our baby... If you love me and are willing to accept this baby as your own..." Kate took a deep breath and continued, "Then I am willing to let you love us both."

Castle simply stared at her and smiled.

They kissed again and she whispered, "I need to take a bath. Meet me in the bedroom?"

Castle smiled and nodded. Then she turned around and asked, "Alexis?"

"Mother has her for the night. They are going to have a girls night in. Then, she's going to take her to school in the morning."

Kate laughed and then she was horrified, "Your mother knows about us? Is she okay with it?"

Castle laughed, "She's been wanting us to get together for years. For some reason, she thinks we belong together. She thinks you're good for me."

Kate smiled brightly at him and whispered, "I doubt that. I hurt you and I don't think she ever forgave me for not giving you a chance. I know I don't think I will ever be able to forgive myself. When I think about all the time we lost Castle. I..."

"Don't. Don't think about the past. All that matters is that we are here now. Together. And not being able to love you, even in my dreams, nearly killed me."

She nodded, put her hand on his cheek and whispered, "I'm sorry. So very sorry Castle. If I could go back and change it I..."

"I wouldn't change a thing. Because every road we took back then has led us to this moment.

Kate walked into the bathroom and took her clothes off. She'd never felt completely comfortable in her body before. Like all women, there were things that she wanted to change. She'd always thought that her eyes were too close together. Her teeth could be a bit straighter. However, when she was with Castle, she had never felt more beautiful. He always made her feel like she was the most beautiful woman in the world. At least she was to him.

Staring in the mirror, Kate slowly, opened her big brown eyes. She smiled when she looked up into his beautiful blue eyes reflected in the mirror. The beginnings of a small smile turning up just the corners of his mouth and his eyes closed slightly, causing the tiny laugh lines to crinkle in the corners giving him that ruggedly handsome look that she loves. And that he seems to love to remind her about every time they are teasing each other about their looks.

His right hand softly caresses her shoulder. Back and forth, back and forth, taking the strap of her bra with his hand each time, until the strap is slowly lowered down her arm until her right breast is completely visible to his admiring gaze. Her eyes never leave his. She watches as his eyelashes rest almost on his cheek as he gazes down at her naked breast. Kate's nipple puckers just from the contact of his eyes. Because other than his gaze, he has not even touched her there yet. Kate's nipple puckers, reaching out to him begging him for more attention as he gently slides his warm hand across her left shoulder to drop the other strap.

Once the satiny bra falls past Kate's hardened nipple, it slides silently into her lap allowing both of her breasts to fall free and unveiled in the soft sensuous light. He raises his eyes slowly to meet hers. His large hands reach down to lightly pinch her nipples, one at a time and Kate gasps softly. The sound is just a hiss that is barely able to be heard in the darkened room. Kate feels a raw ache low in her stomach, as a moist warmth begins to dampen the soft material in the center of her panties. She sighs and whispers, "Oh Rick..."

His hands leave her nipples and press against her heated skin to softly slide down her rounded tummy and down to her lap. He rubs his hands against her stomach. Almost as if he were trying to ease away the ache he knows is there, but instead, he only increases it. He leans over to touch her again and Kate can feel the rough material of his clothes scratching her naked back. It should feel strange, but it feels incredibly arousing. His distinctive cologne hits her nose and makes her shiver. He holds Kate against him for just a few minutes longer before he places his hand under her right elbow to show her that he wants her to get up and follow him.

His hands slide smoothly down her arms as he holds her away from his body so he can just look at her. She sees him swallow and then he whispers, "So damn beautiful."

His heated gaze begins at the top of her head and lowers until his eyes meet hers. Continuing, they stop for just a second at her quivering lips noticing that they are slightly parted to allow her shallow gasps of breath to escape through them. His eyes lovingly stop at her full breasts. He whispers softly again,"They've gotten bigger."

She smiles and says, "You've been checking out my assets Mister Castle?"

He laughs at her and whispers, "Always. Because you have some mighty fine assets. If I do say so myself."

His hands quickly drop down to her rounded stomach. Relishing the feel of her naked skin under his hands. Kate is nearly hypnotized by the feeling of his hands on her body.

Kate shivers with arousal and she closes her eyes. That is when she realizes that she just had a small orgasm. Since she's been pregnant, every sense in her body was heightened. Lately, her arousal was through the roof.

When Kate finally opens her eyes she sees him looking at her with a cocky grin. The grin that she hated when they first met, but now fills her with love and hope.. At that very moment, his eyes silently tell her that he knows what just happened. Crossing his arms, he stands looking at her for few minutes longer, making her body tremble yet again.

He whispers, his voice deep and strong, "Slip out of your panties. Take them off Kate. I want to see you. All of you."

Without any hesitation, she does as he asks. She feels very vulnerable but at the same time she feels excited standing there completely naked in front of him. Especially since he is still fully clothed. Tenderly, he opens his arms for her and she quickly step into their warmth, feeling his comforting protection. She thinks about how he smells so good and how he makes her feel so safe and warm. The roughness of his clothes rubbing coarsely on her naked body stimulates her even more. She looks into his eyes and whispers, "You make me feel so loved. So cherished. I don't think I've ever felt like this before."

Castle smiles, "I always want to make you feel that way Kate."

Pulling her with him, Castle sits on the edge of his bed. Carefully, he places her on his lap. She is suddenly very aware of the wetness that is slowly seeping from between her legs and is now moistening his pant leg. She blushes with the knowledge that he to is very aware of what is happening to her. All because of her feelings for him. Feelings that she kept buried for far too long.

He places his hand under her chin and he turns her face to his and they look deep into each others eyes. Then, he kisses her again for at least the hundredth time that night. It is a soft, but deep and probing kiss and she closes her eyes first. Kate hears soft moans escaping her lips, but the tiny sounds are lost in his open mouth as it still presses against hers.

Without taking his lips away, his hand leaves her chin to trace a line down her slender neck, stopping for a moment at the pulse point to feel her racing heartbeat. Then he asks, "Are you nervous Kate?"

Kate shakes her head and whispers softly, "Not nervous, just very aroused."

Castle just smiles. His hand moves on to her soft shoulder, giving it a soft squeeze. Wasting no more time, he touches her breast. He pinches her nipples softly between his thumb and forefinger. Kate moans loudly and pulls away from the kiss and calls out, "Ohhhhh... God..."

Castle sees the look in her eyes and asked, "Are you okay?"

She nods and whispers, "I'm more than okay."

He kisses her again deeply. Kate's tongue pushes out to greet his at that exact moment, telling him what he wants to know.

The kiss stops abruptly, and just as quickly his hand leaves her breast. Suddenly, she feels cold and empty. Missing his kiss and the passion that filled her. Placing his hands firmly on her arms, he gently forces her to rise. Kate looks down at his pants where she was sitting and she sees the wet spot she has left. He looks at the spot also before raising his eyes to look deep into hers. Watching her blush, he just smiles tenderly at her. Then he whispers, "Excited?"

Kate can only whisper softly, "Yes. A little..."

Castle laughs, "Only a little?"

Kate smiles brightly, but says nothing. Castle bends to gently lift her naked body up into his strong and loving arms, carrying her to the side of his bed where he delicately lays her down and she sinks into the soft comforter. Kate rests her head on the pillow and looks up at him. Castle takes off his jacket and tie and discards them into a pile on the floor. Both of them are very impatient now.

Kate's gaze pierces him as the rest of his clothing just seems to melt away. When Castle kneels on the bed, he causes the side of the bed to lower as he slips over her body to lie next to her. Kate looks over at him and shivers when she sees him completely naked. He looks so powerful and virile.

Lying on his side, he faces Kate, pulling her body towards him. They lay there for the longest time just staring at each other as if they were trying to memorize each others features so that they could be remembered long after this moment is gone. They don't speak a word. The only thing that can be heard in the quiet room is their breathing and Kate is sure that he can hear her heart pounding. Castle rises up to give her a tender kiss.

With his hand on her shoulder, Castle gently pushes her back and she doesn't resist. Suddenly, he is above her, placing soft little kisses on her face, on her neck and on the soft undersides of her arms. Kate loves his kisses. Especially the sweet one he places in the palm of her hand. She quickly curls her fingers tightly to hold on.

He deliberately misses her breasts and lowers his lips to pepper her stomach with a mixture of kisses and licks, seemingly tasting her. Further down her body, his mouth travels slowly until he reaches her mound. Pressing his face into her, he kisses the soft curls that he finds there.

Slipping his hands between her legs, he gently presses against the insides of her thighs silently asking her to open herself to him. And she does so willingly.

Castle sits back on his knees and he admires her beautiful opening that has been hidden from his gaze until now. Lowering his head to her, Castle inhales deeply. Slowly, raising his head with his eyes closed, he holds his breath deep. Savoring the scent of her. The tell tale sign that she is ready for him.

His lips softly touch the inside of her thighs. Carefully he dodges the area where she wants him to touch her the most. Teasing her, he kisses her body everywhere, but he continues to avoid kissing the place she needs it the most. The spot that her silent pleas keep begging him to touch. It feels as if her body is burning with the tremendous need for him. Kate raises her hips to try to meet his moving face, but he is always careful to only let his breath brush her there.

Kate closes her eyes just as he moves up her body to quickly take one of her hardened nipples into his mouth. He is not gentle and he sucks it hard offering tiny little bites that send sparks right to her core. He is careful not to forget to offer the same attention to her other nipple.

Kate can feel the tears stinging behind her closed eyelids as she moans, "Please Rick... I need more... I..."

She begs him release her pent up frustration.

Finally, listening to her moans, he slips down from her tender breasts and he instantly presses his tongue long and hard against her. She moans loudly telling him that is exactly what she wants him to do, "Oh God Rick..."

The tip of his wet tongue flicks at her clit. She screams from the intense feelings he is causing to roll through her, "Oh Rick!"

Her head flips rapidly from side to side and gentle mewling sounds escape through her parched lips. Her hands opening and closing, continuously grasping at the bed-sheets while her body shudders with pleasure. Lights explode behind her closed eyes and the tears that have been stinging behind her eyelids begin to flow.

Moments later, she reluctantly returns to reality and only then can she hear her own heavy pants loud in her ears. Kate feels dizzy as she lays next to him. Enjoying the feeling of warmth that spreads up from her center right through to her stomach and onto her breasts. Castle looks up at her glowing face and smiles at her. With the pads of his thumbs he gently wipes away the tears that have fallen onto her cheeks. He whispers softly to her, "Why the tears? Did I hurt you? Did I hurt the baby?"

Kate shakes her head and whispers, "God no... That was incredible. I've never felt anything quite like that before Castle. I... It was incredible Castle. I love you. So much..."

He smiles that wonderful smile that she has grown to love so much over the years. The smile that she swears he reserves just for her.

Kneeling before her, he carefully places himself between her opened legs. Rubbing himself in the creamy wetness. The wondrous proof of her orgasm. He moistens himself well before placing himself at her entrance. Then, he whispers, "Are you sure?"

Kate gives him a look that is something between disbelief and wonder. He is such a wonderful, wonderful man. Always so attentive to her every need. So very thoughtful to her emotions and feelings. Giving her until the last moment to change her mind. As if she would ever do that. This is right where she wants to be. She can't speak. She can only nod.

He hasn't entered her yet. He waits, holding his weight off of her body by placing his hands on either side of her. Speaking softly, his voice so deep and so filled with passion, he says, "Look deep into my eyes Kate. Don't look away."

Kate couldn't look away. Even if she wanted to. Which she didn't. She has wanted this for weeks. Although if she was completely honest with herself, it has been much longer than that. Way before Josh. Before everything got so complicated and pathetic. She knew that she would do anything he asked of her. Her smoldering brown eyes meet his soft blue ones and she can feel him push slowly and gently into her. Her eyes roll back in her head and they both sigh at the same time. He fills her completely and makes her feel so wonderful. His deliberate movements are so very slow.

Castle slides in and out of her slowly, but in time increasing the speed, maximizing the friction and creating the most pleasurable heat inside her. That wonderful ache builds again, in the lowest part of her stomach with its warmth spreading upwards like the branches of a tree, spreading and spreading throughout her entire body.

Castle watches her closely and he can tell what is happening to her. Even before she is aware of it herself. He quickly falls back on his heels in a kneeling position and he pulls her up with him onto his lap in one gentle swoop and without missing a single stroke. Kate tries to hug him closer to her, feeling such love and tenderness, but he doesn't allow it. Holding the upper part of her body away from him, he tells her softly, "Turn your head toward the mirror. Watch us make love Kate..."

Kate watches their naked bodies moving in a rhythm as old as time. It's the age-old dance of the sexual human. Her eyes return from the mirror and she looks back at him. Kate can see that he is looking down at the place where they are connected, still holding her back slightly so he can watch them coming together.

Kate's hands are behind her back holding herself up so she is totally defenseless when he takes his finger and touches her clit, gently caressing it.

Overwhelmed by the sensations, she screams, "Oh Rick!"

Kate feels the lights explode again behind her eyes.

Castle finally pulls her closer to him and allows her to wrap her arms tightly around him. With both his large hands crushing the sides of her head, he kisses her hard and deep, capturing her ecstatic screams in his open mouth. Their bodies move in unison. Constantly trying to get even closer to each other, although it is physically impossible.

Too soon, Kate can feel herself spiraling back down into reality to hear the deep, low, guttural moans escape Castle's lips. He grabs her ass, squeezing the cheeks tightly in his grasp, holding her to him so close and so still. He comes hard as the spasms from deep inside her surround him, milking every drop of juice from him.

As the intensity of their orgasms subside, he holds Kate close to him, resting his face against her cheek. He feels the moisture from the tears she had cried during their powerful lovemaking. He grows worried and he asks, "I didn't hurt you. Did I? The baby's okay?"

She shook her head and kissed him so very softly. Then Kate whispered, "The baby and his mother are absolutely perfect Castle. That was amazing..."

Castle holds her tight and rocks her so very gently. Caressing her back softly with his hands. And he tells her how beautiful she is, without the use of words.

What feels like hours pass, but in reality is only minutes, he pulls her from his lap and tucks her gently into bed. He slides his naked body in behind her and they fit together like two spoons in a drawer. His hand rests on her stomach, cupping it and running it over the place where their baby now rests.

Placing a loving kiss just below her ear, he whispers, "I love you" as she closes her eyes and falls in a deep contented sleep...

A/N- So, there it is. Hope it doesn't stink too badly. Reviews are definitely appreciate for this chapter...