Talk-show host Ellen DeGeneres has denounced tabloid claims that she and wife Portia de Rossi have marital problems. In her monologue Wednesday, DeGeneres, 55, said she saw a photo of themselves on a magazine cover "and it said: 'Ellen and Portia Marriage Crumbles.' And I was like, 'Oh, what happened? They seemed so happy.' And then I was like, 'Wait, I'm Ellen.' And I should know if that was happening." She told the audience, "There's not one ounce of truth to any of it. I'm very happily married."