Rose Byrne and Bobby Cannavale dating -- report Rose Byrne arrives at the season 5 premiere of Damages at the Paris Theatre in New York City on June 28, 2012. NEW YORK, Dec. 4 (UPI) -- Australian actress Rose Byrne and U.S. actor Bobby Cannavale are a new couple, sources told Usmagazine.com. Byrne, 33, is best known for her work on the TV legal drama "Damages" and in the big-screen comedy "Bridesmaids." Cannavale, 42, is a cast member of Hob's "Boardwalk Empire" and can now be seen in the Broadway revival of "Calgary Glen Ross." "They've been dating for a few months," an insider told Usmagazine.com. I think Rose is a good match for him.