Ariana Grande and Ethan Slater met on the set of 'Wicked' and went Instagram official with their relationship while in Sydney for the movie's world premiere

Ethan Slater had nothing but praise for his girlfriend, Ariana Grande, while discussing her turn as Galinda in the upcoming film adaptation of Wicked. “She’s a comedy genius,” Slater, 32, said of Grande,

Although it hasn’t always been pop-u-lar with the public, Ariana Grande’s relationship with her “Wicked” co-star Ethan Slater is now Instagram-official. The “Eternal Sunshine” singer on Monday celebrated the Jon M.