The pair - who have a one-year-old son together - confirmed in an official statement sent out to various media outlets that they made a “mutual decision” to end their relationship.
Their statement read: “Evan Rachel Wood and Jamie Bell have decided to separate. They both love and respect one another and will of course remain committed to co-parenting their son. This is a mutual decision and the two remain close friends.”
Evan and Jamie first got together on the set of the music video for the Green Day single ‘Wake Me Up When September Ends’ in 2004, where they played a young couple torn apart by war.
The couple were first together for around a year before deciding to split up, during which time she began dating rock singer Marilyn Manson.
They reunited in 2011 when she and Marilyn split, and married in a private ceremony in California a year later.
Evan then confirmed the news back in July that she had given birth to a baby boy, their first child together.
Back in April, Jamie gave an interview with ABC News where he discussed the difficulties that can come with being a high-profile working couple, saying: “It's tricky, sometimes you are exhausted, actually a lot of the time you are exhausted, but I am very blessed. I have a healthy son, I have a great wife, I have a good job. I'm living the dream in a lot of ways.”