Every morning I bring you a cup of coffee, just so I can see a smile on your face. Because I think you are the most remarkable, maddening, challenging, frustrating, person I've ever met. And I love you Kate, and if that means anything to you, if you care about me at all, just don't do this.

Four years, I've been right here. For years. Waiting for you to open your eyes and see that I'm right here!

Beckett: How the hell could you do this?
Castle: Because I love you. But you already know that, don't you? You've known for about a year now.

Castle: You're not alone in this. I'm here.
Beckett: I know.

We're Caskett. Which is good since the whole murder thing!

Beckett: I can't help but wonder how many other girls have gotten this tour.
Castle: I'm not going to deny that I have brought other women up here. But, none of them were you.

Castle: They're going to kill you Kate, and if you don't care about that, please think about how that's going to affect the people who love you. You really want to put your dad through that? What about Josh?
Beckett: And what about you Rick?
Castle: Well of course I don't want anything to happen to you. I'm your partner, I'm your friend.
Beckett: Is that what we are?
Castle: You know what? I don't know what we are. We kiss and then we never talk about it. We nearly die frozen in each others arms, but we never talk about it. So no, I got no clue what we are. I know I don't want to see you throw your life away.

Castle: If we got murdered right now, I'd feel so ripped off.
Beckett: Yeah, me too!
Castle: At least we have last night. We should have done that four years ago.

The butler did it!

Don't leave me, please. Stay with me. Ok. Kate, I love you. I Love you Kate.

Castle: You believe me?
Beckett: I never stopped.

Katherine Houghton Beckett, will you marry me?

Castle Quotes

I need time to stop being mad and you need time to figure out a way to be OK with this.

Alexis

I tried to stay in the car I really did.

Castle