Disclaimer: I own EVERYTHING. haha I wish, but I don't. I own NOTHING.

A/N: This is before Castle and Beckett even get together. I love this song and it just inspired me to write something.

Say Something- A Great Big World

Anywhere I would've followed you

Say something I'm giving up on you

"You're leaving."

"I can't stay anymore."

"Castle…"

"I'm done. I'm giving up on you. I can't do this anymore."

"Please, Castle. Don't do this."

"I have to."

He had left the other day and ever since then Kate had been distraught. She never thought he would actually leave. She had grown so accustomed to having him in her life. She just didn't know what to do anymore. She should've convinced him to stay. She should've have stopped this. But she couldn't. She was in shock. She had not believed that he would actually leave. She thought this was just some game or some joke. She thought that he would change his mind. She thought he would come back. But he left, and he's not coming back. The precinct has been silent. Ryan and Esposito were afraid to approach her because she has been moody since he left. Lanie wanted to slap her for letting him go. Even Gates was a little disappointed that Castle had left.

If she had said something, then maybe, maybe he would still be here. She was too stubborn for her own good. She knows how much he cared for her and how he would do anything for her. She knows all of this. So why didn't she say anything when he said he was leaving and giving up on her?

A/N: I know it's short. But I didn't really have a story of this song. Just a small scene. Review . I absolutely love the song. It's so beautiful and raw. You guys should also look at X Factor USA's Alex and Sierra's cover. I love them too.

p.s. I do take song suggestions. If I like the song and it inspires me to write hehe.