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.

I almost died and all I could think about was you.

Beckett

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

You just want me to take my shirt off again.

Beckett

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.

I hid in your closet. Why won't you hide in mine?

Beckett

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

Take your hands off your tool, Marco!

Beckett

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.

That's going to leave a nasty scar. Every time you see it, think of me.

Beckett
From, "Don't ruin my story with your logic" to "We want the happy ending, we can't give up." Check out all of the great Castle quotes right here at TV Fanatic.

Castle Quotes

I can't help it if you got off by putting things in my mouth.

Beckett

Beckett: (Clears throat) Ahem. What's the deal with men and boobs, anyway?
Castle: Biological. We can't help it.
Beckett: But doesn't it bother you that they're so obviously not real?
Castle: (Pauses) Santa's not real. We still love opening his presents.