She and Stage Beauty co-star Billy Crudup have been together of like a year and a half now. Maybe two years? There was some scandal b/c when they got together Billy had just broken up with Mary Louise Parker, who was pregnant with his child. People accused Claire of "stealing" him from his pregnant girlfriend. Personally I think that's silly. No one but the parties involved know what really happened, and a man can't be "stolen" unless he wants to be. Crudup and Parker share custody. On a related note, I recently read an interview with Ben Lee where he said that he and Claire are still close friends.