The couple just released a statement saying, "With absolute love and respect we decided to separate as a couple earlier this year. 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."
The couple has one child, 4-year-old Axl.
They initially began dating when Fergie appeared on Duhamel's show, "Las Vegas." They dated 5 years before tying the knot at a lavish event in Malibu.