United Kingdom, Feb. 14 -- Ethan Slater is "unendingly proud" of his girlfriend Ariana Grande.

The couple have been dating since 2023 after meeting on the set of 'Wicked' and they have largely kept their relationship private, but Ethan has now lavished praise on his partner publicly after she was nominated for the best supporting actress Oscar for her role as Glinda the Good Witch in the big screen movie-musical.

Ethan, 32, told Us Weekly: "I'm unbelievably proud of her. She worked so hard. She and [co-star] Cynthia [Erivo] worked so unbelievably hard to not only make this movie and be the best versions of [characters] Glinda and Elphaba, but to promote it. They're incredible. I'm unendingly proud."

The actor's romance with Ariana came...