The marriage of the King to the daughter of the Emperor Maximilian filled the Court with fêtes and celebrations. The King put on a ballet in which Madame and all the princesses were to dance; among them only the Princess de Montpensier could rival Madame in beauty. The Duc d'Anjou and four others were to make an appearance as Moors; their costumes would all be identical, as was usual in this sort of performance. On the first occasion on which the ballet was presented, the Duc de Guise, before the dance began and before he had donned his mask, said a few words to the Princess as he went past her. She saw clearly that the Prince her husband had noticed this, which made her feel uneasy. A little later, seeing the Duc d'Anjou in his mask and Moorish costume, who was coming to speak to her, she mistook him for the Duc de Guise and said to him "Do not have eyes for anyone but Madame this evening: I shall not be in the least jealous. I am ordering you. I am being watched. Do not come near me again." As soon as she had said this she moved away.
The Duc d'Anjou stood there thunderstruck. He saw that he had a successful rival: the reference to Madame made it obvious that this was the Duc de Guise, and left him in no doubt that his sister was to play second fiddle to the Princess de Montpensier. Jealousy, frustration and rage joining to the dislike which he already had for the Duc roused him to a violent fury; and he would have given there and then some bloody mark of his temper had not that dissimulation which came naturally to him prevented him from attacking the Duc de Guise in the present circumstances. He did not, however, refrain from the pleasure of disclosing his knowledge of this secret affair. He approached the Duc de Guise as they left the salon where they had been dancing and said to him "To presume to raise your eyes towards my sister, as well as stealing the affection of the woman I love is altogether too much. The presence of the King prevents me from taking any action just now, but remember that the loss of your life may be, one day, the least thing with which I shall punish your impertinence."
The pride of the Duc de Guise was not accustomed to submit tamely to such threats, but he was unable to reply because at that moment the King called both of them to his side. He did not forget, however, and tried all his life to exact revenge.
From that evening the Duc d'Anjou endeavoured in 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; I shall 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. "I shall lay your doubts at rest." He said. "I am going to do what all the royal power could not make me do. It will cost me my fortune but that is of little account if it makes you happy."
He went straight from his sister's house to that of his uncle, the cardinal. He convinced him that having fallen into the King's disfavour, it was essential that it should be made quite clear that he would not marry Madame, so he asked for his marriage to be arranged with the Princess de Portien, a matter which had previously been discussed. The news of this was soon all over Paris and gave rise to much surprise. The princess de Montpensier was both happy and sad. Glad to see the power she had over the Duc, and sorry that she had caused him to abandon something so advantageous as marriage to Madame. The Duc who hoped that love would compensate him for his material loss, pressed the Princess to give him a private audience so that he could clear up the unjust accusations which she had made. He obtained this when she found herself at his sister's house at a time when his sister was not there and she was able to speak to him alone. The Duc took the opportunity to throw himself at her feet and describe all that he had suffered because of her suspicions, and though the Princess was unable to forget what the Duc d'Anjou had said to her, the behaviour of the Duc de Guise did much to reassure her. She told him exactly why she believed he had betrayed her which was because the Duc d'Anjou knew what he could only have learned from him. The Duc did not know how to defend himself and was as puzzled as she to guess what could have given away their secret: at last, while the Princess was remonstrating with him for giving up the idea of the advantageous marriage with Madame and rushing into that with the Princess de Portien, she said to him that he could have been certain that she would not be jealous since on the day of the ball she herself had told him to have eyes only for Madame. The Duc said that she might have intended to do so but that she certainly had not. She maintained that she had, and in the end they reached the correct conclusion that she herself, deceived by the resemblance of the costumes, had told the Duc d'Anjou what she accused the Duc de Guise of telling him. The Duc de Guise who had almost entirely returned to favour, did so completely as a result of this conversation. The Princess could not refuse her heart to a man who had possessed it in the past and had just made such a sacrifice to please her. She consented to accept his declaration and permitted him to believe that she was not unmoved by his passion. The arrival of the Duchess, her mother-in-law, put an end to this tête-à-tête, and prevented the Duc from demonstrating his transports of joy.
Some time later, the Court having gone to Blois, the marriage between the King of Navarre and Madame was celebrated. The Duc de Guise who wanted nothing more than the love of the Princess de Montpensier, enjoyed a ceremony which in other circumstances would have overwhelmed him with disappointment.