
Actually this isn't about "Mildred Pierce," it's about something written in the dialogue style of that film. The site I swiped it from didn't mention the source but I'll bet it was written by James Cain who wrote the Mildred Pierce novel, or Ranald MacDougal who wrote the screenplay. Maybe this scene was in the film and I just forgot it.
The person who put it up did two versions of the same dialogue, as a teaching tool. I love bad and better comparisons! See what you think:

THE VIEW: Bad
Mary: Look, Cliff, at that beautiful sky and the fluffy white clouds. Aren't they lovely?
Cliff: Why yes, Mary, they are truly lovely. Almost as lovely as you, my darling, in that magnificent emerald green dress that brings out the color of your eyes.
M: Oh, Cliff.
C: I knew the moment I met you that I would want to bring you here one day, to this special place. It's always meant a great deal to me, Mary.
M: Oh, Cliff.

THE VIEW: Better
M: Look at that sky! Those clouds! This place is terrific. I'm so glad you brought me here.
C: Not half as glad as I am, lady. (With a leer, perhaps)
M: There you go again. I can't trust you for a minute, can I?
C: Me? You can't trust me? I'm wounded. Injured. Deeply hurt.
M: I'll bet! Seriously, though, how did you ever happen to find this place?
C: Well, let's see. I was first brought here by a spirit guide. No? How about a gypsy fortune teller? A very small Cub Scout?
M: Can't you be serious for half a minute?
C: Maybe. (Dubiously)
M: Give it a try, why don't you?
C: All right. Half a minute's worth of serious. The truth is, I've been coming here since I was a kid. My granddad showed me the way, one of the last hikes he took me on before he died. It's always been kind of a special place. (Pause) Actually, you're the first person I've ever brought here.
M: Oh, Cliff! That makes me feel really special, too.
C: You are, kiddo. Don't you know that?
Wow! Well, the second is obviously the better version! It's a cliched style, I admit...but it works! The question is, why does it work?
Maybe cliches aren't as fatal as we've been taught. The books tell us to avoid them but I've seen them work time and time again when they're combined with inventive ideas and good word music. In my opinion the how-to-write authors did everyone a disservice when they emphasized total stylistic originality. You wonder if a lot of otherwise good authors stopped writing because of advice like this. The truth is that you can be very creative and musical within an existing style.