Selena Gomez tells Justin to stay away from Miley

Justin Bieber and Selena Gomez.
Justin Bieber and Selena Gomez. Bang Showbiz

SELENA Gomez has warned her on/off boyfriend Justin Bieber to stay away from Miley Cyrus, now that she and Liam Hemsworth have called off their engagement.

Miley, 20, and 'The Hunger Games' actor Liam Hemsworth are said to have called off their engagement and Selena, 20, is reportedly worried her on/off boyfriend Justin will try to hook up with Miley, who he reportedly had a fling with a few years ago.

A source told "Justin and Miley hooked up a few years ago. Then he started dating Selena. It created this whole jealously thing between them. Now Selena doesn't want Justin anywhere near Miley -- and they've been fighting about it!"

Liam, 23, and Miley are still living together at their Los Angeles home but in separate rooms after Liam told the singer their relationship was finished for good.

A source told Us Weekly: "They are definitely over."