The 'You Already Know' singer and the 44-year-old actor have revealed they went their separate ways earlier this year, but kept the news private for some time in order to "adjust" to the situation.
And the pair - who started dating in September 2004 and married in January 2009 - have vowed to remain "united" to support their four-year-old son Axl.
They said in a statement: "With absolute love and respect, we decided to separate as a couple earlier this year."
![Axl Jack Duhamel, actor Josh Duhamel, and singer Fergie attend Pandora Summer Crush at LA Live on August 13, 2016. Photo / Getty](https://www.nzherald.co.nz/resizer/v2/6MTOVJU7THSISKSD6WVGZ5W66Y.jpg?auth=e3ed08cf0c1d72ad8fdc264066cdb0f1ee6eb5e358b4a68d3c9b910d0615db81&width=16&height=24&quality=70&smart=true)
"To give our family the best opportunity to adjust, we wanted to keep this a private matter before sharing it with the public. We are and will always be united in our support of each other and our family."