Bones

Booth: You look nice ... Better than nice, you look very ...
Brennan: Thanks.
Booth: Bones, How did you know I was going to keep your promise?
Brennan: What promise?
Booth: To get Sean and David back with Margaret Sanders.
Brennan: Maybe I was lying to catch the bad guy. I learned that trick from you--the end justifies the means. ... Booth, I knew you'd back me up. I knew you wouldn't make me a liar.
Booth: How did you know?
Brennan: Because you want to go to heaven.
Booth: But, you don't believe in heaven.
Brennan: But, you do.