AN: This is set after the episode in LA (3x22) and has spoilers for that ep and potentially spoilers for any other ep before that. It will not delve into the last two episodes, Alexis is not applying for early entry to collage, and Montgomery is still with us and it is not know that he was the 3rd cop. Also for this to make sense, LA happened in late May, that will be important later and will be reminded off when it becomes so.

-Enjoy :D

Disclaimer the characters that you recognise are not mine, I just like to have fun with them.

Chapter 1

Kate Beckett sat on her closed toilet seat staring at the little chunk of plastic in her hand. This couldn't be right. The two little blue lines must be lying. But the two already discarded ones only proved her wrong. She was pregnant. And she knew who's it was.

Castle.

As she sat there she pondered the night, only six weeks ago that this had happened.

When she had come home from LA earlier that week Josh was livid that she had shared a hotel suit with Castle and the argument had continued for over two weeks in the small amounts of time they had spent together. Josh was convinced that something had happened between them, and as much as Kate had tried to tell him otherwise, he wouldn't believe her. There was yelling, there was screaming, and there was Kate storming out of his apartment for the last time in overly hurried fit of rage.

It was only as she got outside Josh's apartment building that she realised that there was only one place she could go. Lanie was out of town with Esposito, and other than her the only person she could talk to about this was Castle. Just as she stepped out from under the awning of Josh's building the heavens opened and she was immediately soaked to the bone. Thankfully there was a cab there, as if waiting for her. She got in and gave Castle's address.

By this time she had moved out into the kitchen gotten herself a glass of water. She had almost poured herself a glass of wine when she realised she shouldn't drink it. She sat and the memories started again.

Fifteen minutes later when the cab got to Castle's apartment building it was still pouring with rain, so by the time she got into the lobby she was soaked. When she got to his door, he was standing there with a towel, as if waiting for her. Dam, she thought, the doorman must have called up.

"Kate?" He asked holding up the towel, and she flung herself in his arms.

The next thing she knew she was on the couch, crying into his shoulder. She figures she must have told him what had happened because as soon as she lifted her head he handed her a glass of very strong scotch. He had one of his own, and after they both downed them, he filled them. She vaguely noted that there was a movie on in the background, but didn't care what it was.

The bottle of scotch was half empty, when had that happened? When she first saw it, it was practically full. Before she knew it the bottle was only a quarter full and Castle gently pried the glass out of her hand and sat it on the table, and she was cuddled into his chest.

He was running his hands through her hair, just that simple gesture had her moaning and her moan had a significant effect on him as well.

All of a sudden she was no longer laying her head on his chest, but kissing him. A kiss full of passion, full of lust. He moaned and she took the opportunity to explore his mouth with her tongue.

When she felt his hands on her skin under her shirt, she just had to ask, "Alexis? Your Mother?"

"In the Hamptons for the weekend." At his response she lifted her arms so he could pull her top off, then started unbuttoning his shirt.

After that her memory only came in bits and pieces.

His hard length in her hand. His mouth running up her leg, getting closer. Him buried as far as he could go inside her. And how exquisite it felt.

She sat on her couch wondering how this has happened, she was always careful. She always made sure her partner wore a condom. She couldn't take the pill as every time she had tried it just made her way crankier than anyone could handle. So she always made sure.

She rolled a condom over his hard length while they were on the couch. But after that….

The stairs. Him entering her again and again, so hard, so fast. From behind.

His bedroom door. Because he couldn't wait any longer.

And His bed. His huge, wonderful bed.

She was sure there was a shower in there somewhere.

She sat on the couch with her phone in her hand, deciding if she should call him, when her next full memory came back. The next morning.

She woke sprawled on top of him while he was still asleep. She attempted to move, but his arms tightened around her, holding her in place. He opened his eyes and stared at her, as if he didn't quite understand what he was seeing. He moved one hand from her back to the back of her head to pull her in for a kiss. Slow and languid.

That is until she felt him start to twitch under her and she was overwhelmed by her own desire and speeded up the kiss. Putting a bit of fire and passion behind it. She ran her hand down his side and stroked his shaft. Once. Twice was all it took to have him standing at attention. So she removed her hand and impaled herself on him.

They both let out a cry, then moans of pleasure as she started to move atop him. And as she started to move, so did he, his hands on her hips. He moved below her at the same speed, he moved one of his hands to her most sensitive area, and she shatters around him and he followed her almost immediately.

She moved in for one last kiss, and found him almost asleep already. So she carefully climbed out of his bed, wrapped herself in his robe, and went to find her clothes from the night before. She dressed and left before she could talk herself out of it.

She needed to tell someone, but who? She couldn't tell Castle, not yet anyway, he didn't seem to remember much of that night either, other than the fact that she had broken up with Josh.

Kate decided that the person she could tell was Lanie. She would, after being excited, be able to help her out. Her phone was still in her hand, so she sent Lanie a text.

Need girl talk.

Almost instantly she received a reply.

I'll be there in 20. Ice-cream and wine are not optional.

She sighed in defeat, she would have to tell Lanie as soon as got there, otherwise she would figure it out. Then again maybe that was a better option.

Fine. Be quick.

It was less than 20 minutes later that Lanie showed. She walked through the door with a pint of double chocolate ice-cream and two bottles of red wine and headed straight for the kitchen to grab some glasses.

Kate realised she best talk now, before Lanie poured the wine. "Um, Lanie." She started as Lanie corked the wine bottle. "None for me, not tonight."

"What?" Lanie says in an incredulous voice. "You call me over here for girl talk and you don't want wine. There can only be one reason." Lanie paused for the dramatic effect. "You're pregnant." She accused. Kate didn't say a word, just stared at her feet. "You are. Whose is it?" It's like Lanie is having a one sided conversation. "Josh?" Kate barely moves, just rolls her eyes. "Ok, not Josh." Lanie pretends to ponder the other choices. "Writer-Boy?" Kate stares at her feet. "Ok girl. Spill. What the hell happened? And why aren't I finding out about this until now?"

Kate sighs and walks out of her kitchen to sit on the couch yet again. Lanie follows with the ice-cream and two spoons, leaving the bottle of wine behind.

"Well," Kate started. "You know Josh and I broke up about six weeks ago."

"Yeah, you told me all the gory details of that, so stop stalling." Lanie almost commanded.

"Well, since you were out of town and I didn't want to go back to an empty apartment, I went to see Castle." Kate paused briefly. "And long story short, we got very drunk, his family wasn't home, so you can figure out what happened…." She trailed off.

"Does he know?" Lanie asked.

"No. He doesn't even seem to remember what happened. I myself only have vague memories." She answered.

"But… How?" Lanie stuttered. "I thought you were always careful, so this didn't happen."

"Well, the first time-" was all she got out.

"The FIRST time?" Lanie squealed. "How many were there?"

"Umm…."

"You don't remember?" Lanie asked, astounded. "It must have been good."

"Lanie! I was drunk, so was he. And in answer to your question, I was careful the first time, but after that, I really don't remember much, except that there was many, many times." And that it felt amazing, Kate added in her head while staring into space.

"Hello, Earth to Kate." Lanie said while waving her hand in front of her face.

"Sorry. What?" Kate replied. "I was a little spaced out there."

"Yeah I got that." Was Lanie's reply. "I asked when are you gonna tell him?"

Oh shit. Did she really have to do that?

AN2: Please let me know what you think.I have the next eight or so chapters of this already written, so reviews pending I will pot one or two a week.