One Day at a Time alum Mackenzie Phillips had a rocky relationship with one of her castmates on the 1970s sitcom. “Richard Masur wasn’t very nice,” Phillips, 66, told former costar Valerie Bertinelli on the Monday, September 7, episode of her “Getting Naked” podcast. Phillips and Bertinelli, 66, starred in One Day at a Time as the teenage daughters of Ann Romano-Royer (Bonnie Franklin), who must adapt to single motherhood following her divorce. Masur, 77, played David Kane, Ann’s divorce lawyer-turned-fiancé. He left the show after the characters’ season 1 split. Despite not initially getting along with Masur, Phillips said she and her…
