And it seems it was the last straw for the actor. According to Us Magazine, Miley and Liam Hemsworth are "just weeks away from calling it off permanently."
The insider says, "He is over her and wants to make a clean break. No more back and forth."
The two are still living together at Miley's L.A. home, but according to another source, "They're not even sleeping in the same room," the source said.
Miley's not only losing her boyfriend over her twerking fiasco -- she lost the cover of Vogue. Hollywood News Daily reports that the magazine's editor-in-chief Anna Wintour cancelled the singer's photo shoot because she found her performance "distasteful."