Justin Trudeau and Sophie Grégoire Trudeau announce separation

Prime Minister Justin Trudeau and his wife, Sophie Grégoire Trudeau, have decided to separate, according to statements posted online by both of them.

"Sophie and I would like to share the fact that after many meaningful and difficult conversations, we have made the decision to separate," Trudeau wrote in a message posted to his Instagram account.

Trudeau, 51, and Grégoire, 48, were married in May 2005 and have three children together: two sons, Xavier, 15, and Hadrien, nine, and one daughter, 14-year-old Ella-Grace.

"As always, we remain a close family with deep love and respect for each other and for everything we have built and will continue to build," Trudeau and Grégoire Trudeau wrote in identical messages. "For the well-being of our children, we ask that you respect our and their privacy." 

Grégoire Trudeau, a former television presenter, has been a prominent presence at Trudeau's side throughout his political career and become a public figure in her own right as an advocate for several charitable and social causes, including mental health and gender equality.

According to a statement from the Prime Minister's Office, Trudeau and Grégoire Trudeau have "signed a legal separation agreement."

"They have worked to ensure that all legal and ethical steps with regards to their decision to separate have been taken, and will continue to do so moving forward," Trudeau's office said.

"They remain a close family and Sophie and the Prime Minister are focused on raising their kids in a safe, loving and collaborative environment.  Both parents will be a constant presence in their children's lives and Canadians can expect to often see the family together. The family will be together on vacation, beginning next week."

The announcement of their separation was extensively covered by international media on Wednesday.

Trudeau's parents — former prime minister Pierre Trudeau and Margaret Trudeau — famously separated in 1977.

As recounted in his autobiography, Common Ground, Trudeau and Grégoire Trudeau began dating in 2003. Grégoire Trudeau, the daughter of a stockbroker and a nurse, was a former schoolmate of Trudeau's late brother, Michel.

The couple became engaged in 2004 and married each other a year later during a ceremony at Montreal's Sainte-Madeleine d'Outremont church — "by Canadian standards, a sweet and appropriately understated fairy-tale wedding," was how a writer for Maclean's described it. 

Both Trudeau and Grégoire Trudeau spoke at times candidly about their relationship and the challenges of marriage.

"Our marriage isn't perfect, and we have had difficult ups and downs, yet Sophie remains my best friend, my partner, my love," Trudeau wrote in Common Ground, which was published in 2014.