...It is customary to begin a series of dates with a great deal of entertainment, a moderate amount of food, and the merest suggestion of affection. ...As the amount of affection increases, the entertainment can be reduced proportionately. When the affection IS the entertainment, we no longer call it dating.
Under no circumstances can the food be omitted.
— Judith Martin, Miss Manners' Guide to Excruciatingly Correct Behavior
(Thanks for the reminder, A!)