Coupled with his disinclination to see Gaston again placed in a position to give an heir to the French throne, Louis had sufficiently profited by the lessons of Richelieu to feel the whole extent of the danger by which he would be threatened should Gaston succeed in acquiring allies beyond the frontiers; and he accordingly hastened to express to the Queen-mother his displeasure at the intelligence of this new passion, with a coldness which immediately tended to convince her that a great change had taken place in his feelings towards herself. Alarmed by this conviction, and anxious to discover the cause of so marked a falling-off in his confidence, Marie de Medicis exerted all her energies to ascertain through whose agency her influence had thus been undermined; nor was it long ere she became assured that Richelieu had availed himself of her absence to renew all the old misgivings of the King, and by rendering her motives and affection questionable, to make himself entirely master of the mind of the jealous and suspicious monarch. Once satisfied of this fact, the Queen-mother resolved to profit in her turn by the absence of the Cardinal, whose ingratitude was so flagrant as thenceforward to sever every link between them; and the opportunity afforded by the open demonstrations of affection which Gaston lavished upon the Mantuan Princess was consequently eagerly seized upon in order to counteract the evil offices of the minister. Marie had watched the growing passion of the Duc d'Orléans with an annoyance as great as that of the King himself, for she had never forgotten the animosity displayed towards her by the Duc de Nevers; and she was, moreover, anxious, as we have already stated, to effect an alliance between her second son and a Princess of Tuscany; but aware of the capricious and unstable character of Gaston, she had hitherto confined herself to expostulations, which had produced little effect. Now, however, she resolved to derive the desired benefit from a circumstance which she had previously deprecated, and, summoning Monsieur, she readily persuaded him to affect the most violent indignation at her opposition, while she, on her side, would evince an equal degree of displeasure against himself. To this arrangement Gaston readily consented, as he delighted in intrigue, and was aware that by pursuing Marie de Gonzaga with his addresses he should alarm Richelieu as well as annoy the King. An open rupture accordingly appeared to take place between the mother and son; and while the Duke continued to visit the young Princess, and to enact the impassioned lover, Marie de Medicis expressed her indignation in the most unmeasured terms, and threatened him with her unrelenting anger should he persist in his suit. So well indeed did she perform her self-imposed part, that not only Louis himself, but the whole Court were thoroughly deceived by the stratagem; and meanwhile the unsuspecting Princess became the victim