Sienna Miller & Rhys IfansSienna Miller and Rhys Ifans have reportedly hit their “first serious rough patch” after a year of dating.

Sources close to the couple, who got engaged earlier in the year, believe the problems have been caused by their busy work schedules forcing them to spend a considerable amount of time apart.

A friend told the Daily Mail: “It has been very strained and things are very sensitive at the moment.

“They are not over, but Sienna has made some tearful long-distance calls to Rhys and has confided to some of the cast on her movie that things aren’t great.”

Sienna is currently filming GI Joe in Los Angeles while Rhys is working on Radio Caroline in Southampton and the source added that Rhys is also jealous of Sienna spending time with male friends in LA: “Rhys can be quite jealous and he doesn’t like Sienna hanging out with other guys.

“She also had lunch with Matthew Rhys in LA in March. They used to date and Rhys is very insecure about him. He wasn’t happy they’d met up.”