Grey's Anatomy actress Kate Walsh is engaged to be married. The 54-year-old actress recently got engaged to her boyfriend, Andrew Nixon. Walsh shared the news Wednesday during an Instagram Live video with her former Private Practice co-star Amy Brenneman in honor of the show's 15th anniversary. "Here comes the jungle cat, that is my fiancé," Walsh said while panning the camera to Nixon. "She just 100 percent outed your engagement," ...