Ariana Grande Dating 'Wicked' Costar Ethan Slater Following Split with Husband

Ariana Grande is dating one of her "Wicked' costars ... TMZ has learned, following her split with hubby Dalton Gomez.

Sources with direct knowledge tell us she and Ethan Slater -- who plays Boq in the film adaption of the Broadway musical -- started dating several months ago during production of the flick.

It was back in March when a photo circulated, showing Ariana and Ethan next to each other as the cast of "Wicked" celebrated Michelle Yeoh’s Oscar win in London.

TMZ broke the story, Ariana and Dalton have yet to file divorce docs -- though our sources say those are coming -- but their relationship has been over since January. We're told Ariana and Dalton remain friendly, and he's been dating as well.

As for Ethan, he's been married to singer Lilly Jay since 2018, and they welcomed a son last year. Our sources say Ariana and Ethan did not start dating until after he separated from Lilly.

Ethan's a talented dude, working as an actor, singer, composer and writer. He got his big break recently as SpongeBob Squarepants in the Broadway musical -- for which he earned a Tony Award nomination.