Lubitsch's "Trouble in Paradise."
I can't think of the line off-hand, but every moment is perfection, especially wehen Herbert Marshall, the dashing jewel thief, tells Kay Francis, the beuatiful wealthy widow, "I came here to rob you, but unfortunately I fell in love with you."
That movie, Sondheim's "Company" and watching Audrey Hepburn and Albert Finney in "Two for the Road" made me sophisticated at a tender age.
Miriam Hopkins to Herbert Marhsall: "Darling, remember, you are Gaston Monescu. You are a crook. I want you as a crook. I love you as a crook. I WORSHIP you as a crook. Steal, swindle, rob--oh, but DON'T become one of those useless, good-for-nothing gigolos."