Gillian Anderson has a new addition to her ex files.

The 43-year-old actress has split from her long term boyfriend Mark Griffiths who she has two sons with; Oscar, five, and Felix, three.

Her rep revealed the news to Us Weekly in a statement.

"Gillian Anderson and her partner Mark Griffiths have amicably separated after six years together," the spokesperson said.

The X-Files star divorced from film art director Clyde Kotz in 1997. They have a 17-year-old daughter together.

And her two-year marriage to documentarian Julian Ozanne ended in 2006.

Gillian has a busy time ahead with a handful of films set for release this year including Mr. Morgan's Last Love, The Curse of the Buxom Strumpet and I'll Follow You Down.