William Congreve 
The Way of the World 

A Chocolate-house.
Mirabell and Fainall rising from cards. Betty waiting.
MIRA. You are a fortunate man, Mr. Fainall.
FAIN. Have we done?
MIRA. What you please. I’ll play on to entertain you.
FAIN. No, I’ll give you your revenge another time, when you are not so indifferent; you are thinking of something else now, and play too negligently: the coldness of a losing gamester lessens the pleasure of the winner. I’d no more play with a man that slighted his ill fortune than I?d make love to a woman who undervalued the loss of her reputation.
MIRA. You have a taste extremely delicate, and are for refining on your pleasures.
FAIN. Prithee, why so reserved? Something has put you out of humour.
MIRA. Not at all: I happen to be grave to-day, and you are gay; that’s all.