Beckett: Did you just say Kate? Are you picturing you as the PI and me as the gangster's girlfriend?
Castle: No!

That's the stuff dreams are made of.

I got no love for this thing, just you.

Why am I narrating?

She was worth every punch.

If I'm anything, I'm discrete.

Where have you been all my life?

Keep 'em coming pal, you're doing great.

Guilty pleasure or just guilty?

Don't miss me too much. The dog. Not you.

Do you have a case of puppy love, Esposito?

Castle: We could keep him here at the precinct. We could use a mascot.
Espo: I thought that's what we had you for.

Castle Quotes

Sorry we had to cockblock you, bro.

Ryan

Castle: How do you know when you're in love?
Beckett: All the songs make sense.