Castle: Kate, I have never given up hope, not since the day we met and that will never change until you tell me it should.
Beckett: Then don't change, ever.

No relationship can survive secrets or lies.

Castle

Castle: They've been through way too much together to give up on what they have.
Beckett: You're a wise man Castle, with a big heart and you're rather good looking too.
Castle: You might want to pace yourself with the flattery. You've got a whole dinner to get through.

Looks like someone did not enjoy getting screwed, out of their money that is.

Castle

You're supposed to be our buffer. Buff!

Ryan

Castle, nothing you do is little.

Ryan