Prince Albert of Monaco told French magazine Point de Vue on Thursday, November 4, he was “furious” after Nicole Coste, the mother of his eldest son Alexandre, alleged that his now-wife Princess Charlene moved the child into their home’s employee wing before their royal wedding in 2011. Life after royalty: what are these former princesses doing now? Coste, who met Albert while working as a flight attendant in 1997, gave birth to Alexandre in 2003, according to the BBC. Alexandre, now 18, was formally recognised in 2005 after French publication Paris Match published photos of him in Prince Albert’s arms. The prince put out a statement via his lawyer saying he “has and will continue to face up to his responsibilities” of being the boy’s father, The New York Times reported at the time. In an interview she gave to Paris Match in September, Coste said her relationship with Albert has been “built on trust” and that he honoured his commitment to “be present” from the start of Alexandre’s life, gradually bringing him into his family. Which royal wedding of 2021 was the most lavish? Charlene’s ongoing ENT infection has kept her from returning from her home country of South Africa to Monaco since May, which caused speculation about the state of her and Albert’s relationship. Albert denied any rumours of a rift in an interview with People magazine in September, later telling the publication how he and their children look forward to her return. “Obviously she misses the children,” he said. “And they miss her. We all miss her.” Which royal wedding of 2021 was the most lavish? Asked about her relationship with the princess, Coste said in their situation “diplomacy had to prevail”, adding that she experienced moments during the engagement period before Charlene and Albert’s 2011 wedding that shocked her. Coste said one such experience related to her son Alexandre, who was around eight years old at the time. “She changed my son’s room, taking advantage of his father’s absence to put him in the employee wing,” Coste said. “As a mother, I cannot find words to describe these actions.” Coste could not be reached for comment. Representatives for Prince Albert and Princess Charlene did not immediately respond to request for comment. “It was inappropriate, I was furious to discover that,” Albert told Point de Vue on Thursday regarding Coste’s comments, adding that he was not made aware of what she was going to say in her interview. Meghan to Masako: 21 commoners who married into royalty “I obviously did not know what she was going to publish,” he said. “She had just informed me that she was going to release something, I thought it would just be a birthday photo.” Elsewhere in her interview, Coste, who left her work in aviation 19 years ago to pursue a career as a fashion designer, said she dislikes how often she and Charlene are compared. “It is a subject that I cannot avoid because we are often put in parallel. I don’t like being compared,” she said. “I never displayed myself as an enemy. I am a gentle woman. Given our respective ties to the prince, we should have made sure to support each other cordially.” This article originally appeared on Insider Want more stories like this? Sign up here. Follow STYLE on Facebook , Instagram , YouTube and Twitter .