A source tells PEOPLE that Grande and Davidson’s relationship “just started,” adding that “it’s very casual.”
A second source also confirms the news, which was first reported by Bossip. Reps for Grande and Davidson did not immediately respond to PEOPLE’s request for comment.
Davidson was on hand to support Grande as she performed on Sunday at the Billboard Music Awards. “After Ariana’s performance, they were backstage and he had his arm around her,” an onlooker tells PEOPLE exclusively. “They seemed very lovey-dovey. He was hanging out with her and her friends with his arm around her. She seemed quite smitten.”
“Ariana and Mac officially broke up right after Coachella weekend, but they ultimately struggled for a long time with their relationship, and it was basically over last year,” the first source adds.
Grande and Davidson, both 24, have known each other since at least 2016, when the singer hosted Saturday Night Live.
During her opening monologue, the “Side by Side” singer joked about how she thought she was ready to get involved in a “real adult scandal” in order to “take her career to the next level.”
Towards the end of the comedy bit, Davidson came onstage, asking Grande if it was true that she was looking to “smoke some pot.”
“C’mon let’s smoke some crack man,” she countered.
Davidson confirmed that he had split from his longtime girlfriend Cazzie David last week.
During a sneak peek of a video interview with Complex’s Open Late with Peter Rosenberg, the 24-year-old SNL cast member revealed, “We’re not together anymore.”
“Very talented girl; she’ll be great, and she’ll be fine,” he added. “Yeah, I think she’ll be okay.”
When Rosenberg said, “you’re going to be okay,” Davidson responded, “yeah, probably,” before adding that of Cazzie, “she’ll be fine.”
This article originally appeared on PEOPLE