What is the relationship between the man and woman?

M: I just can’t bear that fool!
F: Oh, David, what happened? Why are you in such a rage?
M: It’s the Goddamned Smith! I swear I’ll let him know what a stupid mistake he has made!
F: Calm down, dear, calm down. Don’t forget you’ve just made a New Year resolution to have more self-control. Remember? Self-control is at the root of all the virtues. This is the present you sent to yourself for your 42na birthday.
M: All right, all right. "keep cool ,anger is not argument." "be calm in arguing, for fierceness makes error a fault, and truth discourtesy."
F: Good boy! Who said that?
M: Webster and George Herbert. Anger begins with folly and ends with repentance.
F: By Pythagoras.
M: Hey, Susan! You’ve become an expert, too!
F: Well, it would be too strange if I don’t know these names. You recite the sentences and the names at least seven times a week.