Richard Castle: And where are you off to?
Alexis Castle: Oh, I signed up for an escort service. I have to meet a client.
Richard Castle: What? On a what?
Alexis Castle: I just wanted to see if you were listening. I am going to the library. To study.
Richard Castle: Not cool.
Alexis Castle: Bye, Kate.
Kate Beckett: Oh, bye-bye.
Richard Castle: A goodbye kiss? When did that start?
Kate Beckett: Just now. Yeah. No, I'm as surprised as you are.
Richard Castle: Well, I don't know that I'm surprised. I mean, you are pretty lovable.
Kate Beckett: Well, you raised a great person, so...
Richard Castle: Mmm. You say that now. You weren't here for the beginning.