Her nonconformism and her beauty acquired Louise's friendship with Rudolf, Crown Prince of Austria, who was her age and whom she encouraged to marry her younger sister Stéphanie. The wedding took place in Vienna on 10 May 1881. When Stéphanie settled down at the Austrian court, her mother Marie Henriette warned her: "Avoid Louise, and if you see her, reason with her, show her a good example [...] Louise is not true. It costs nothing to lie or act. She is very frivolous". His marriage brought the Crown Prince even closer to the Coburgs, but if he esteemed Louise, he nonetheless shared Philipp's debauchery. In addition, Rudolf had few interests in common with his young wife, who gave him a daughter. Affected by a venereal disease, he infected his wife, who became sterile. Disappointed in both his emotional and political life, Rudolf led a life of debauchery until the Mayerling incident in 1889.