Separation is often imagined as a clean, decisive moment a clear line drawn between being married and being single .
Billy Crudup gave a rare update on his current relationship with Mary-Louise Parker, whom he left in 2003 while she was pregnant with their son William Parker.
Seth Meyers interviewed his three children, Ashe, 9, Axel, 7, and Adelaide, 4, for the Thanksgiving episode on November 27.