Los Angeles - Portia de Rossi says wife Ellen DeGeneres is her "best friend". And Portia has opened up about the factors that make their union so special and long lasting. She said: "We're just really good friends and we talk about everything, and we never ever, ever lie to each other, like, not even the tiniest lies. And she's the only person I want to hang out with. Ellen and Portia recently enjoyed a yacht holiday alongside celebrity friends including One Direction singer Harry Styles.