The situation between them took an ugly turn after Cyrus, 20, hit the headlines for twerking and flirting with singer Robin Thicke during a recent performance at the MTV Video Music Awards, reports radaronline.com.
"The VMAs is the straw that will break him. He wants to be out of the relationship," Life and Style magazine quoted a source as saying.
Hemsworth's family and friends have also advised him to end the relationship.
"All of his family and management are begging him to break it off and publicly move on," said a source.
The couple is engaged since over a year.
--IANS (Posted on 06-09-2013)