 In her anger, the duchess then tells her husband that the knight is unfaithful and has tried to seduce her, and the Duke accuses the knight of treachery.To save his honor, and to avoid being exiled (and thus forced to distance himself from his mistress), the knight, once the lord has promised to keep his secret, reveals to his lord where his heart truly lies, thus violating his promise to his mistress.The Duke reveals the truth of the knight's love to his wife, trusting her to keep the secret; but, at the feast of "Pentecoste", the Duchess makes a cruel inside joke to the Châtelaine about her lover and her "well-trained dog".