British actor Robert Pattinson arrived in Australia leaving Kristen Stewart behind.

Hollywood Life claimed the couple have agreed to separate while Rob heads to Australia to shoot new movie 'The Rover'.

"Rob and Kristen are on a trial separation right now. For Kristen, it's all or nothing. She's ready for marriage, but Rob is over the relationship. When Rob returns, they'll assess their relationship, but he doesn't want to get back together, because she's co-dependent," a source said.

While the couple had appeared to put their relationship problems behind them, reuniting in time to walk the red carpet of the 'Twilight: Breaking Dawn Part 2' premieres last autumn.

"Rob's been shaky ever since the cheating scandal," the source quickly added.

Latest rumour claimed that Hollywood's controversial couple Robert Pattinson and Kristen Stewart broke up as the British actor will head to Australia to film his upcoming movie, "The Rover".

The actor confirmed that he will be heading down under in a few days ready for his new movie, leaving his girlfriend behind. The couple, who were spotted at a Golden Globe after party on Sunday night after the British hunk presented an award at the event, are set to be separated while Rob films 'Rover' in Australia for the nine week shoot.

Despite leaving his girlfriend in Los Angeles alone, Rob admitted the role was "fun" and "cool" "It's set 20 years in the future, in Australia," he said.

"Basically, I'm an American whose brothers are in a criminal gang in Australia. Guy Pearce's character kidnaps me to try and find my brother. Other than that, it's really complicated. But it's cool. It's really fun."

The couple's relationship was put in jeopardy when Kristen Stewart's cheating scandal broke out summer of last year. Kristen had a scandalous affair with her "Snow White and the Huntsman" director Rupert Sanders. However, Robert Pattinson graciously forgave his girlfriend.