Credit: Chelsea Lauren/WireImage

It's over between Fringe star Anna Torv and husband Mark Valley.

The couple separated a few months ago, their rep confirms to They married in a quiet, small wedding in December 2008.

Australia-born Torv, 31 and Valley, 45, played lovers and fellow FBI agents in early episodes of Fringe; Valley now headlines the Fox series Human Target.

Before their on-set romance was revealed, Valley gushed to E! News last year about his costar. "I think [Anna] is just a fantastic actor and I really like working with her...She's my favorite on the show, to be honest with you."