Ethan Slater has made rare comments about his girlfriend Ariana Grande at the New York City premiere of Wicked: For Good amid split buzz.While speaking to Extra for an interview, the 33-year-ols actor offered unexpectedly glowing praise for his girlfriend Ariana Grande over her work as Glinda in Wicked part 2.“Ariana [Grande]’s performance is out of this world and Cynthia [Erivo]’s performance is unbelievable,” he gushed.Ethan Slater went on to heap praise on his other Wicked costar including Johnny Bailey, Michelle Yeoh and Marissa Bode.“I’m so proud of this movie and it’s so different from the first one, and yet it feels like the obvious true continuation of it,” he added.The actor also opened up about Grande’s friendship with Erivo, who plays Elphaba Thropp in the film.“They really do just communicate off camera even more than they do on camera. And I think that that’s what makes their friendship really beautiful to witness is the ways that they help each other through… the craziness of this,” Slater shared.Ethan Slater’s rare remarks about Ariana Grande comes as online speculation about the couple’s relationship has continued to circulate in recent weeks after they appeared distant at the Wicked premiere. However, sources confirmed last week they are still together.Wicked: For Good is set to hit theaters on November 21.