diane-josh-split-230.jpgJosh Brolin and Diane Lane have split after eight years together.

"Diane Lane and Josh Brolin have decided to end their marriage," their rep said in a statement. An insider added to Us Magazine, "It was a mutual decision. It is very amicable. It's not ugly, it's just over."

Brolin and Lane, who tied the knot in August of 2004, reportedly separated a couple of months ago. The last event they attended together was the premiere of The Guilt Trip in December, so it's not clear if they were trying to keep the news under wraps or if they ended things shortly after.

In 2004 Brolin was cited for misdemeanor domestic battery after Lane called police during an argument at the couple's home, and he was arrested and released on $20,000 bail. Brolin was also accused of cheating on Lane several times during their marriage, but in 2010 he told Playboy, "I don't f*ck around on my wife. I mean, check her out, man. My relationship with my wife is fantastic."

Lane was previously married to actor Christopher Lambert from 1988 to 1994, and during that time Brolin was married to actress Alice Adair.