Ariana Grande and Ethan Slater's relationship blossomed during the filming of "Wicked," where they played Glinda and Boq, respectively. Both were married to other people when they first met, but their previous relationships ended in 2023. The couple was first photographed together at an Oscars party in March 2023, and news of their relationship became public in July of the same year. Grande's album "Eternal Sunshine" is said to contain references to her romance with Slater, and the couple was spotted on a public date in June 2024. Grande defended Slater against tabloid rumors, praising his character and heart in interviews.
Source: https://www.today.com/popculture/ariana-grande-ethan-slater-relationship-timeline-rcna193217