A rep for Swank confirmed to Us Weekly on Monday that the couple called it quits in May.
Swank began dating Campisi, her agent, in December 2006. The actress was previously married to actor Chad Lowe -- whom she met on the set of Quiet Days in Hollywood in 1992 -- from September 1997 to November 2007.
"A lot of people look at divorce as a failure. I really looked at my relationship with Chad [Lowe, her ex husband] as 14 years of success. I will carry him in my heart forever. He's part of me," the Mary & Martha actress told Instyle magazine in April 2010. "We have friendships that we grow out of. But I believe in the long haul. I believe in having a monogamous relationship."