TMZ were first to confirm the split, announcing that they would "remain close friends". And although Ariana then went on to release a gushing statement about him, they officially unfollowed each other on social media a few days later.
Not only that, but Mac Miller then got himself arrested for drink driving and a hit-and-run. Yikes.
Now it's all starting to make sense, after reports claim that Ariana left him for another guy.
According to Bossip, Ariana and SNL star Pete Davidson are seeing each other.
Pete only just announced his own split from Larry David's daughter Cazzie in a new interview on Peter Rosenberg's Complex show Open Late.
We guess only time will tell if the rumours are true or not!