Alberto E. Rodriguez, Getty Images
Multiple sources confirmed the split to the the New York Post.
"Miley and Liam are done; it's over," one insider said. "She likes to party really hard and can be pretty wild. It became a problem for him."
Liam has been spotted on the beach in his native country, Australia, but according to the sources, he's not just on a vacation.
"He needed to get away from Los Angeles and spend some time with his brother and friends," another source said.
Although no infidelity has been confirmed, RadarOnline reported Liam cheated on Miley with actress January Jones.
"They have broken up before, and are broken up again now," a source revealed. "There was drama because she suspected he had a wandering eye. And she recently tweeted a denial that he cheated."
Miley and Liam's reps did not return calls to the New York Post, but a source insisted there is still a chance for reconciliation.
"Miley is a fiery character, and they do fight, but she is crazy about Liam," the insider said. "She isn't ready to accept it might be over for good."
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