From that evening the Duc d'Anjou endeavoured an all sorts of ways to turn the King against the Duc de Guise. He persuaded the King that Madame would never agree to her proposed marriage to the King of Navarre as long as the Duc de Guise was allowed to have any contact with her; and that it was unacceptable that a subject, for his own vain purposes, should place an obstacle in the way of what could bring peace to France. The King already disliked the Duc de Guise and this speech inflamed his dislike so much that the next day when the Duc presented himself to join the ball at the Queen's apartments, he stood in the doorway and asked him brusquely where he was going. The Duc, without showing any surprise answered that he had come to offer his most humble services, to which the King replied that he had no need of any services which the Duc might provide, and turned away without any other acknowledgement. The Duc was not deterred from entering the room, his feelings incensed both against the King and the Duc d'Anjou. His natural pride led him, as an act of defiance, to pay more attention to Madame than usual, and what the Duc d'Anjou had told him prevented him from looking in the direction of the Princess de Montpensier.
The Duc d'Anjou watched both of them with close attention. The Princess's expression, in spite of herself, showed some chagrin when the Duc de Guise spoke with Madame. The Duc d'Anjou who realised from what she had said to him, when she mistook him for the Duc de Guise, that she was jealous, hoped to cause trouble.
He drew close to her and said, "It is in your interest and not in mine that I must tell you that the Duc de Guise does not deserve the choice you have made of him in preference to me, a choice which you cannot deny and of which I am well aware, he is deceiving you madame, and betraying you for my sister as he betrayed her for you. He is a man moved only by ambition, but since he has the good fortune to please you, that is enough; Ishall not attempt to stand in the way of a felicity which without doubt I merit more than he. It would be undignified for me to persist in trying to gain the heart which is already possessed by another. It is bad enough to have attracted only your indifference and I would not like to have this replaced by dislike by wearying you with endless protestations of unwelcome devotion."The Duc d'Anjou who was genuinely touched by love and sadness, was hardly able to complete this speech, and although he had begun in a spirit of spite and vengeance, he was so overcome when he thought of the Princess's beauty and of what he was losing by giving up all hope of being her lover. that without waiting for her reply he left the ball, saying that he felt unwell, and went home to nurse his grief.
The Princess de Montpensier stayed there, upset and worried as one might imagine. To see her reputation and her secret in the hands of a suitor whom she had rejected and to learn from him that she was being deceived by her lover were not things which would put her in the right frame of mind for a place dedicated to enjoyment; she had, however, to remain where she was and later go to supper in the company of the Duchess de Montpensier, her mother-in-law.
The Duc de Guise who had followed them to his sister's house, was dying to tell her what the Duc d'Anjou had said the day before, but to his astonishment when he did have the opportunity to speak to her, he was overwhelmed by reproaches which were tumbled out in such angry profusion that all he could gather was that he was accused of infidelity and treachery. Dismayed at finding himself in this unhappy situation when he had hoped for consolation, and being so much in love with the Princess that he could not bear to be unsure if he was loved in return, he took a sudden decision.