https://cdnph.upi.com/ph/st/th/3631781004722/2026/upi/e6fbe0493f5a3218cc8309a544757e0c/v1.5/Reports-Ariana-Grande-and-Ethan-Slater-split-up.jpg" /> "Wicked" co-stars Ariana Grande and Ethan Slater have split up after three years of dating, multiple media outlets reported.