Uh-oh, it looks like there’s already trouble in paradise if the rumors are true. Sienna Miller has reportedly cooled off her relationship with her married boyfriend, Brothers and Sisters star Balthazar Getty after they’ve been fighting over Sienna’s partying ways, according to Starpulse.

Sienna went back to England after what’s being alleged as a “cooling-off” period with the rich actor who is a former alcoholic. In order to save the relationship, the Mail claims they’re spending some time apart. A source dished:

“Sienna is back in London to give them both some cooling-off time. They are still together at the moment but she has said things aren’t good. There have been some pretty unpleasant rows, largely over Balthazar’s reluctance to commit. She has really wanted to be able to step out as a couple but Balthazar is very torn over his children and it looks like he might be wanting to go back to his family. Sienna is devastated… Sienna is totally paranoid he is going to go back to his family. She feels very let down by Balthazar.”

Sienna’s rep refused to comment on any of the reports.

Aw, how sad for Sienna. It’s not so difficult to believe that Getty isn’t so eager to commit when he’s still married though.

Photo Source: WENN