After the two artists performed Grande's hit single, "Love Me Harder," Bieber performed his newest song, "Where Are You Now," while Grande took a water break. When the pop singer returned, the duo sang Bieber's "As Long As You Love Me," which happens to feature Grande's beau, Big Sean.
Grande and Bieber's dance moves were seen to be a bit flirty in the concert footage, and apparently Big Sean thought so too. TMZ reported that the rapper tweeted and then deleted: "This kid is about to learn not to touch my girl like that. Beliebe that."