Alright guys, this is my first fanfic. This idea came to me at work today while I was sweeping. At the time it felt genius, but as I started writing I didn't know how I would feel about the end product.
I'll let you be the judge.

I unfortunately do not own these characters.

"Are you sure you don't want a big wedding? I mean, I want what ever you want, but Vegas doesn't seem like something you would go for" Esposito said.

Lanie just looked at him with her 'shut up' face.

"Yeah Javi, I was the one who suggest it. I have no need for a big wedding. All I need is a small get together with our closest friends, and you."

He leaned down to kiss her and she finished packing her suitcase.

"You better behave at your bachelor party, sexy", Lanie joked.

"Hey, you too!" Esposito said.

In less than forty-eight hours they would be married and their friends lives will be changed forever.

"Hey girl!" Lanie yelled to Kate as she climbed into the cab. Inside with Lanie was Jenny and two of Lanie's other friends. They were going to the airport on their way to Vegas. The five women joked and giggled until they arrived. They checked their bags and went through security. While on the plane, Kate sat by the window and thought about Castle. She wondered if he was going to be there. She wondered if he was dating anyone, but most of all, she wondered what he had been doing for the last year.

Kate thought about what had happened between them. After she went to his loft, soaking wet and told him how she felt about him, everything was great. They were inseparable for almost three months. He needed her and she needed him even more, but she would never admit it. Everything was falling into place until they started arguing about the smallest things. They started to fight more and more everyday.

A few weeks after resigning, Esposito called Kate and said that Gates let him come back early and that she should go ask for her job back. Kate knew that she would eventually go back to the precinct.

After what felt like an eon of not working, Kate went to gates and tried to get her job back. Gates agreed, Kate was one of her best detectives, and Kate was back working the next day. Gates was skeptical to let Kate come back, she knew that Kate could never drop her mother's case.

Rick was not happy that Kate was returning to work. He knew that the first thing she was going to do is try to catch the guy who tossed her off that roof. He couldn't, he wouldn't watch her throw her life away. He gave her a choice, her life with him or solving her mother's case. Without hesitation, she chose her job. He was crushed, heart broken and tried to convince her to stay with him. Within the next two days, she packed her things out of his loft and moved out. After that, he never came in to the precinct, he never talked to her and he hadn't saw her since the day they broke up.

When she left his loft that night, she tried to persuade herself that this is the right choice. She had been trying to catch this guy for almost a decade and she had only been in a relationship with Castle for three months. Her list of pros outweighed the cons and she dived right back into her mother's case. Watching surveillance videos from the building she almost died in, asking around the building if any of the residents knew where the man went. Nobody knew anything, not that they would admit it if they did. She was at a standstill and all she could think about was Castle. She loved how he made her feel, she loved that he took such good care of her, she loved that he loved her. But that was all over now.

Rick pulled up in a limo outside of Javier's apartment. Ryan and Javier put their bags in the trunk and jumped in. They were also on their way to the airport. Ryan and Javier joked around on the way to the airport. Rick mostly sat back and smiled, he had other things on his mind. Mostly Kate. He knew she was going to be there with Lanie. What he was really curious about was if she was dating anyone now, if she ever thought about him. When they got to the airport, the boys went through security and boarded the plane. Rick's gift to Javier was first class plane tickets. Rick leaned his seat back and fell asleep and dreamed of Kate, like he had done every night for the last five years.

"Kate, were here! Wake up!" Lanie said to Kate, nudging her arm.

The girls grabbed their luggage from the baggage claim carousal and entered the streets of Las Vegas. Their fist night there was Lanie's bachelorette party. The team was working on a rather large case, so they only got a weekend off. Although Lanie and Esposito were upset that they wouldn't be able to spend more time together, they were content with the time they had. Wasting no time at all, the ladies checked into their huge hotel on the strip, changed their cloths, fixed their makeup and hair and were out the door in no time.

After that, everything went hazy.

Kate was the first to wake up and all she could think was 'what the hell happened last night?'. As she looked around, she realized that she wasn't at home.

It was all starting to come back to her, she was in Vegas for Lanie's wedding. She sat up holding her head, she felt like a train had run her over.

"Aspirin" she whispered to herself.

Pulling herself out of the comfy bed, she realized that she was naked. 'Thats weird.' She thought to herself. While waking to the bathroom, she nearly fell over the person who was sleeping on the floor wrapped up in the comforter.

"Get up, Lanie" Kate said, gently nudging the body with her foot. She put a t-shirt and shorts on and wondered to the bathroom. She did a double take at the reflection starring back at her in the mirror. Her hair was in a tangled mess, the eye makeup that she had on now smeared around her eyes, making her look like a raccoon. After brushing her teeth and washing her face, Kate heard her phone beep. She searched the room for it, eventually finding it on the floor under the bed. It was a text from Lanie.

Sorry I never found you again last night, I ended up going back to Javi's room.

Now she was beyond confused. If Lanie wasn't sleeping on the floor, then who was? Her detective instincts were going crazy, if Lanie had gone to Esposito's room, that eliminates them. Lanie's two friends went to bed early and she knew that Jenny and Ryan had a room together. That only left one person that she could have been with.

"Rick…..?" She said, once again nudging the person with her foot.

"Go back to sleep Kate" He said.

"Kate..?" He was now also very confused. Why was he laying on the ground? Why was Kate hovering over him and where were his cloths?

"Whats going on?" He asked.

"You tell me." She said in a sassy tone.

"All I remember is Espo's bachelor party." He sat up quickly, obviously too quickly because he grabbed his head and fell back onto the floor. "Got any Aspirin?"

She grabbed the small bottle off the bathroom counter and threw it to him. He started looking around the room for his cloths. He was unsuccessful.

"Do you know where my cloths are..?" He asked Kate.

"No." she said back, wanting nothing more then for him to leave, go back to his own room, go back to New York.

She brought her hand up to her face and started to rub her eyes, thats when she felt it.

"What the HELL is this?" she was now fantic showing Rick her left hand.

"That looks like a wedding ring." He joked. He looked down to open the bottle of Aspirin only to notice something on this hand also.

"Oh no." was all he could get out.

"What?" Kate said.

"Oh no.. I have one too." He now sounded even more confused, showing Kate his left hand.

"You better have a really good explanation for this Castle." Kate demanded.

Reviews are very appreciated :)