Castle: What?
Beckett: Nothing... it's just I'm so used to seeing you act like a 12-year-old all the time, it's refreshing to see you as a father.
Castle: It makes you want me, right?
Beckett: ...And there's the 12-year-old again.
Castle: Does he look like a killer to you?
Beckett: Everybody looks like a killer to me, Castle. Job requirement
Castle: Do I look like a killer to you?
Beckett: Yes, you kill my patience.
Beckett: Nothing... it's just I'm so used to seeing you act like a 12-year-old all the time, it's refreshing to see you as a father.
Castle: It makes you want me, right?
Beckett: ...And there's the 12-year-old again.
Castle: Does he look like a killer to you?
Beckett: Everybody looks like a killer to me, Castle. Job requirement
Castle: Do I look like a killer to you?
Beckett: Yes, you kill my patience.
Castle: What?
Beckett: Nothing... it's just I'm so used to seeing you act like a 12-year-old all the time, it's refreshing to see you as a father.
Castle: It makes you want me, right?
Beckett: ...And there's the 12-year-old again.
Castle: Does he look like a killer to you?
Beckett: Everybody looks like a killer to me, Castle. Job requirement
Castle: Do I look like a killer to you?
Beckett: Yes, you kill my patience.
http://www.tv-quotes.com/shows/castle/quote_23844.html