Miller, Ifans 'on brink of splitting up'

Sienna Miller and Rhys Ifans are on the verge of splitting up, their friends have claimed.

It was reported earlier this month that the pair are going though their "first serious rough patch".

Miller's commitment to the relationship is now said to be wavering and the couple, who began dating last year, are at the lowest point in their romance.

A friend told Grazia: "It's awful but everyone who knows them can just see it coming a mile off. Rhys seems madly in love with her still, but everyone is speculating Sienna has grown out of the relationship.

"It's almost painful to see them together because they've gone from being the perfect couple to him looking as if he's struggling to keep her attention. It's so sad."

Hectic work schedules and Ifans's jealousy are said to be at the root of their problems.