10 Ariana Grande and Ricky Alvarez found their way back to each other after nearly a decade of dating. “They were both in very different places in their lives,” a second source close to Alvarez told Page Six. 10 Ariana Grande and late rapper Mac Miller dated from August 2016 to May 2018, GC ImagesThat same year, Grande got engaged to Pete Davidson after a whirlwind courtship that ultimately imploded. 10 Ariana Grande quietly split from her former “Wicked” co-star Ethan Slater months before the news became public in June. Variety via Getty ImagesOn her current tour, Grande has mentioned her new beau multiple times on amended versions of her hit, “Thank U, Next.”