'So very proud!' Ariana Grande gushes over boyfriend Ethan Slater Wicked: For Good star Ariana Grande has gushed over Ethan Slater, admitting she is "so very proud" of her boyfriend and co-star. 24 March 2026 Ariana Grande is "so very proud" of her boyfriend Ethan Slater. Ariana Grande gushes over boyfriend Ethan Slater The 32-year-old singer and actress has gushed over her Wicked: For Good co-star after a "beautiful run" in off-Broadway play Marcel on the Train, which he stars in, as French mime artist Marcel Marceau, and co-wrote.