Sienna Miller and Rhys Ifans on a break?

London, May 24 : Sienna Miller and Rhys Ifans are on the verge of ending their relationship, for the couple has taken the dreaded step of going on a "break."

Despite getting engaged in March the couple are said to be at the lowest point of their relationship with Sienna, 26, growing tired of 39-year-old Rhys.

Sources say that the final straw came when Sienna was moved to tears over a picture of her ex-lover Jude Law, 35, kissing Kimberly Stewart, 28, and Rhys's gutsy attempts to make her smile backfired terribly.

"Sienna and Rhys have been rowing a lot lately. He's sensed that she isn't quite ready to settle down and has been getting quite jealous and possessive, especially when he found out she'd partied with her ex Matthew Rhys recently in LA," the Daily Star quoted a source, as saying.

"Sienna only accepted his proposal on the third time of asking because she really loves him and didn't want to lose him, despite feeling a bit unready for marriage. It all came to a head, however, when Sienna literally burst into tears over pictures of Jude kissing Kimberly.

"It really took her by surprise because she no longer has feelings for him but it brought back a lot of heartbreak.

"Rhys can always make her laugh and tried to do so this time by singing Kimberly's dad's tune Do Ya Think I'm Sexy? while performing a joke striptease.

"This time though it didn't work and Sienna became really irritated. She wasn't in the mood to laugh and just wanted Rhys to take things more seriously.

"That really got through to him and they sat down, had a heart-to-heart and decided the bickering had to stop and they should take a break," the source added.

ANI