Gillian Anderson Splits from Longtime Love Mark Griffiths X-Files star Gillian Anderson and longtime boyfriend, Mark Griffiths, split after six years together. The couple, who never married, share sons Oscar, 5, and Felix, 3. A rep for the couple confirmed the split to Us Weekly Aug. 7, 2012. The actress has been married twice before. She and director Clyde Kotz divorced in 1997 and the actress parted ways with documentarian Julian Ozanne in 2006. Dave Hogan/Getty Images