A huge thank you to everyone who has reviewed/favourited/followed this fic, I really appreciate the support and you all motivate me to keep writing with your kind words. Here is the final chapter, I hope you like it.

Disclaimer: I don't own Castle or the characters.

It had been three weeks since Hannah's wedding and Beckett was sitting at her desk when she received a phone call.

"Beckett," she paused while she listened to the person on the other end of the phone, "yeah, that's fine, send her up."

Beckett was smiling as she hung up the phone, surprised to have learned that Hannah was downstairs and that the security guard was confirming that she knew who she was.

Every time the elevator sounded for the next few minutes, Beckett would look up expectantly, hoping it would be her friend and she'd be disappointed every time it wasn't. But then Hannah stepped off the elevator the next time she looked up, looking around hesitantly until she spotted Beckett walking towards her and a smile spread across her face.

"Hi," said Hannah, arms open to give her friend a hug as the met near the elevators.

"Hey, what're you doing here?" asked Beckett after they'd hugged and were walking back to her desk.

"I was in the neighbourhood and I thought I should stop by," Hannah replied, looking around the bullpen, taking in the surroundings that her friend worked in everyday.

"I'm glad you did, we need to properly catch up since we didn't really get a chance to at the wedding."

Before Hannah had a chance to reply, Castle had appeared behind them, two coffees in his hand, "Hannah? Hi, what are you doing here?"

Beckett looked down and saw the coffees in Castle's hand while Hannah was explaining to him what she was doing here and it gave her an idea but before Becket could voice said idea, Ryan and Esposito were appearing behind them as well.

They boys had seen someone who seemed to be friends with Beckett appear a few minutes ago and then Castle had arrived and had seemed to know the woman too so now they were both interested in the small gathering around Beckett's desk.

"Hi, I'm Javier," Esposito said, holding out his hand for Hannah to shake.

"Kevin," Ryan said, shaking hands with Hannah too who smiled warmly at them both.

"Guys, this is Hannah, a friend of mine from college," Beckett said, gesturing to Hannah as she spoke before then gesturing to the boys, "and Hannah, this is Detective Javier Esposito and Detective Kevin Ryan."

"Nice to meet you both, Kate has told me a lot about both of you."

Both detective's grinned at Beckett having heard that Beckett talks about them to her friends and she just rolled her eyes in return.

"So, if you know Beckett from college, how do you know Castle?" Esposito asked, wasting no time in getting to the point of why they'd come over to introduce themselves. Before either Castle or Beckett could jump in and answer the question, Hannah was speaking, "I met him a few weeks ago at my wedding."

Both Esposito and Ryan looked surprised, turning to Beckett before Ryan spoke, "you took Castle to your friend's wedding?"

She couldn't exactly deny that now, but she needed a way to get her friend to stop talking, they could explain that their relationship was a secret later, as well as having a suitable answer for Ryan and Espo, "I didn't want to go alone." Okay, that probably didn't do either of those things.

"You could've taken one of us?" Esposito asked, although the boys knew that she would pick Castle over them for something like that. They may have known Beckett longer but there was definitely something different about her relationship between Castle than between them. They were just her good friends and colleagues and they knew Castle was so much more, whether they'd admitted it to each other yet or not.

Beckett shrugged, deciding to play it off as no big deal in front of the boys, "I wanted to take Castle and I asked him first and he said yes."

Hannah was now looking between all of them, confused.

"You went on a date with Castle and didn't tell us?" Espo smirked as he spoke while Ryan smiled brightly beside him.

"It wasn't a date," Beckett said quickly, hoping that Hannah realised that they were keeping their relationship a secret and wouldn't say anything that would give them away.

Beckett breathed a sigh of relief when Hannah spoke up and it backed up their story, "the first thing I asked was if they were dating and Kate told me they were just friends although I have to say that you two did look cute together, I have some photos from the photographer, I'll have to show you them some time."

Beckett blushed, at both Hannah's words about them being cute together and wondering what sort of photos the photographer had taken of them.

"They're always cute together," Ryan replied, smiling even while Beckett glared at him.

"So, can you tell us any good stories from Beckett's past?" Esposito asked, turning to Hannah as he did. There weren't many opportunities to find out about Beckett's past and he wasn't going to let it pass him by.

"That's not going to happen," Beckett said, now glaring at Espo before she turned to Hannah, "how about we go get some coffee and we can catch up?"

"Castle just made you coffee," Esposito cut in, pointing to the two cups that Castle just had placed on her desk but both had so far remained untouched.

"You can have my cup," Beckett said, smirking when he pulled a face, he wasn't a particular fan of the vanilla Castle always added to her drink.

"What about me?" Ryan protested, Castle made really good coffee and even if it wasn't how he usually had it, it would still be good.

"You can have Castle's."

"What about me?" Castle asked, pouting over the fact that Beckett was giving away the coffee he'd just made.

"You're coming with us," Beckett replied, looking at him like it was obvious.

"Why him and not us?" Esposito asked, now looking between them.

"He'll only be a distraction if I leave him alone unsupervised," Beckett answered and it wasn't a very good reason but it'd have to do, they planned to tell the boys about them soon anyway.

"Hey!" Castle objected, "I'm never a distraction."

Beckett just smirked at him in response before she turned back to the boys ,"we'll be back soon, call if you need anything."

As they walked away, both Ryan and Esposito quickly tried to grab Castle's cup and unfortunately for Esposito, Ryan was successful as he'd been standing the closest.

XXX

Beckett's phone chimed with a text as all three of them stood in the elevator and she pulled it out of her pocket, hoping it wasn't anything urgent and she'd have to cut her time with her friend short. It wasn't work related though, it was from Esposito.

By the way, we both know you're dating, we saw you making out the other morning before work.

"Oh my God," Beckett groaned, showing the text message to Castle who couldn't help but laugh, guess they didn't need to tell them anymore since they obviously already knew.

"Are we going to talk about what just happened?" Hannah asked as they stepped off the elevator, looking back and forth between the two of them.

Beckett laughed, "we'll explain when we get to the cafe, okay? For now you can tell us all about what married life is like."

As they exited the precinct and walked the few short blocks to the cafe Beckett had been thinking of going, Hannah told them all about their honeymoon and what married life was like. It wasn't actually that different really, they'd already been living together and the only difference now is that they had the stress of the wedding behind them and they could just enjoy their life together.

It wasn't until all three of them were seated with coffee in front to them that Hannah finally went back to the topic that had been put on hold at the precinct, "are you going to explain what's going on between you?"

Beckett decided to have some fun first before explain that their relationship is just a secret so she looked at Castle before she spoke, giving him a fake sheepish look before she turned back to her friend, "we have a confession to make."

Hannah furrowed her eyebrows, Beckett's words only making her confused, "what do you mean?"

"Rick and I were only pretending to be dating at your wedding."

"You're joking?" Hannah asked, her mouth falling open with surprise as she looked back and forth between Beckett and Castle.

Beckett shook her head, "no, when you called asking if I was going to the wedding, I made up a boyfriend and then I asked Rick to pretend to be my boyfriend so I didn't have to turn up to the wedding alone."

She'd originally not wanted Hannah to know that she'd lied about having a boyfriend because she was sure her friend would tease her endlessly but now that she was in a happy and stable relationship, one she saw lasting, she didn't mind anymore if her friend knew. Plus, it was going to be kind of fun to mess with her before they finally told Hannah that they were actually dating.

"You're making that up, there's no way the two of you aren't dating," Hannah replied and both Castle and Beckett were happy that they seemed so right for each other that someone who had seen them together once could say that she had no problem believing that they were dating.

"Honestly, all that couple stuff from that night, we were just trying to make you jealous of us," Castle replied, attempting to sell their story too.

"Jealous?"

Beckett looked like she was going to protest to what Castle was about to say but when she didn't speak up, Castle continued, "yeah, Beckett told me you two were quite competitive so we thought it would be fun to try to make you jealous of our relationship."

"Even though I was the one that was getting married?" Were they being serious? She'd thought that they were just hiding their relationship which is why they were acting the way they were in front of her colleagues but were they really just friends?

Castle just shrugged in response.

"You two are being serious, you aren't dating?"

"We never said that," Beckett replied, smirking when her friend looked even more confused.

"But you just said he was pretending to be your boyfriend at my wedding?" What was going on?

"At your wedding we were pretending-"

"Sort of," Castle cut it, they'd talked about what had happened at the wedding the morning after it when they found out just how much they cared about each other, and they'd both admitted that while they had said the evening was fake, neither of them had been acting at all.

"Sort of. We technically weren't dating when we arrived but by the end we were together."

Hannah's mouth fell open in shock, "you mean my wedding was your first date?" Were they really not joking around here? They seemed to have been together for much longer than that.

Beckett reached out, placing her hand over Castle's on the table and smiling at him as she spoke, "turns out we'd just needed a little push to get us to admit that we had feelings for each other."

"I can't believe this," said Hannah, looking between the two of them as they smiled at each other. If they hadn't just told her, she wouldn't have believed that they'd only just started dating and they hadn't already been together at her wedding. They seemed good together though and Hannah was happy for her friend, "is it your wedding we'll be going to next?"

Beckett blushed and gave her friend a look which Hannah just responded to by laughing.

They had spoken about that sort of thing though and marriage is something they both want in the future. It's only been three weeks but their relationship has changed so much and so quickly since the wedding but neither of them think they should rush into something like marriage so quickly. They both know though that the other is it for them and right now they're content to just be together and explore this new thing between them before they move even further with their relationship.

"Maybe, who knows," Castle replied, still smiling at Beckett, that soft smile that Beckett loves so much, one that shows how much he really loves her. They'd spoken about that too, love. Castle had said the words first, just a week after the wedding. He'd been holding it back, almost saying it several times before he finally got up the courage to tell her how he really felt over dinner at his place. It turned out she'd wanted to say it too and was holding back, not wanting to push too fast in their relationship. After that, they'd spoken much more openly about how they felt and what they wanted for the future.

"Have you two seriously only been together for a week!" Hannah said, shaking her head at how obviously in love the two of them were.

"It was a long time coming," Beckett replied, squeezing Castle's hand as it still rested on his on the table.

"Are we going to talk about the fact that you brought your fake boyfriend to my wedding?" Hannah asked, laughing along with Castle as Beckett blushed again.

"We are not. And you're not going to tell any of our friends that either, right?"

Hannah laughed again, "your secret is safe with me."

They finished their coffees over more conversation but then it was time for Beckett and Caste to head back to the precinct. They parted ways outside the coffee shop with promises of catching up again soon and Castle knew how busy Beckett could get with work so he was going to make sure that she did take the time off in the future to catch up with her friends again.

"Are you okay with the fact that the boys know about us?" Castle asked as they walked hand in hand back to the precinct. He'd been thinking about it ever since they'd left the precinct, wondering if she was okay with them knowing, that it wasn't too soon for people to know about them.

Beckett shrugged, squeezing his hand, "I would've liked to tell them ourselves and it's embarrassing that they found out the way they did but they were going to find out eventually, we can't live the rest of our lives as a secret couple."

The rest of their lives, Castle liked the sound of that.

"So, about what Hannah said before, do you think our wedding could be the next one?" Castle asked, smiling over at her as they walked back to the precinct, stopping her with their joint hands so they could have private moment before they drew too close to the precinct. Castle tugged her closer to him with their still entwined hands and quickly pressed his lips to hers before he pulled back and waited for her answer.

"Depends on how long it takes for you to ask." Beckett replied, laughing at the stunned look on Castle's face before he was laughing along with her.

They continued walking and had to separate as the precinct came into view, not yet wanting all their colleagues to know they were dating. They walked silently, both thinking about the events of the day, specifically their most recent conversation. They both knew that despite their words, they would still take things slow between them, not wanting to screw things up by moving too quickly before they were truly ready. For now, they would just continue to move at their own pace, enjoying the new eve to relationship before they decided to move forward together.

But they'd get their eventually and one day it would be their wedding that all her friends were attending and she wouldn't need any more fake dates because she'd already have her husband by her side.

And that's the end! Thanks again to everyone for reading, I look forward to hearing your thoughts.