"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 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 tete-a-tete, 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.
The Duc was not able to conceal his love so well that the Prince de Montpensier did not suspect that something was going on, and being consumed by jealousy he ordered his wife to go to Champigny. This order was a great shock to her, but she had to obey: she found a way to say goodbye to the Duc de Guise privately but she found herself in great difficulty when it came to a means of providing a method whereby he could write to her.
After much thought she decided to make use of the Comte de Chabannes, whom she always looked on as a friend without considering that he was in love with her. The Duc de Guise, who knew of the close friendship between the Comte and the Prince de Montpensier, was at first amazed at her choice of the Comte as a go-between, but she assured him of the Comte's fidelity with such conviction that he was eventually satisfied. He parted from her with all the unhappiness which such a separation can cause.
The Comte de Chabannes, who had been ill in Paris while the Princess was at Blois, learning that she was going to Champigny arranged to meet her on the road and go with her. She greeted him with a thousand expressions of friendship and displayed an extraordinary impatience to talk to him in private, which at first delighted him. Judge his dismay when he found that this impatience was only to tell him that she was loved passionately by the Duc de Guise, a love which she returned. He was so distressed that he was unable to reply. The Princess, who was engrossed by her infatuation, took no notice of his silence. She began to tell him all the least details of the events, and how she and the Duc had agreed that he should be the means by which they could exchange letters. The thought that the woman he loved expected him to be of assistance to his rival, and made the proposal as if it was a thing he would find agreeable was bitterly hurtful, but he was so much in control of himself that he hid all his feelings from her and expressed only surprise at the change in her attitude. He hoped that this change which removed even the faintest hope from him would at the same time change his feelings, but he found the Princess so charming, her natural beauty having been enhanced by a certain grace which she had acquired at Court that he felt that he loved her more than ever. This remarkable devotion produced a remarkable effect. He agreed to carry his rival's letters to his beloved.