gushed over her boyfriend to celebrate his latest project.
On Sunday, the 32-year-old pop star took to her Instagram Story to praise the actor, 33, and wrote about how she was 'so very proud' of him.
'Congratulations on a beautiful run of this very beautiful show,' she wrote alongside a butterfly emoji and two heart outlines. 'So very proud.'
The We Can't Be Friends singer also reposted a photo of the production that Slater had shared on Instagram.
This comes shortly after the Daily Mail exclusively revealed how the two Wicked stars' earlier this year.
Slater, 33, has been performing off-Broadway in in a play he co-wrote titled Marcel on the Train.
Ariana Grande lauded her boyfriend Ethan Slater in her latest social media post on Sunday; pictured in January
On Sunday, she took to her Instagram Story to praise the actor, 33, and wrote about how she was 'so very proud' of him as his off-Broadway show concluded
The theater production ran for nearly two months, kicking off on February 5 and concluding its run this week.
In Marcel the Train, Slater played a 20th century French mime, Marcel Marceau, amid the Nazi occupation of France in World War II.
After the pair were caught up in breakup rumors earlier this year, she posted heart emojis as she praised her boyfriend. She also reposted a photo of the production that Slater had shared; pictured in January 2025
Her post comes shortly after an insider close to Grande's family revealed the couple is in a much better place now after hitting a 'rough patch' last year; pictured in February 2025
Their relationship became public in July 2023, shortly after they filed for divorce from their respective spouses. They met while filming in late 2022 and began dating while on the set of the musical adaptation movies
While Grande and Slater never actually called things off, the source claims there was a moment when it was was unclear if their relationship would survive the storm.
