Sienna Miller & Ifans Split  6/4/08

 British actress Sienna Miller has dumped boyfriend Rhys Ifans - because he was jealous of her friendship with her former lover Matthew Rhys.

The Layer Cake star ended her one-year relationship with the Welsh actor last weekend (1June08). Miller - who ended her relationship with Rhys to date Ifans - has blamed the break-up on their long-distance relationship, reports British newspaper the Sun.

A source tells the publication, "Sienna broke the news at the weekend in a call from Prague. "Things have been awkward for a while after she caught Rhys going through her text messages. "She went bananas and Rhys said he was looking for what he called 'incriminating evidence'.

He has been giving her a hard time lately, questioning her commitment to him and the time she puts into the relationship.

"She compared him to a spotlight shining in her face all the time. He is heartbroken they have split. Sienna feels really sorry for him because he had slotted into her family perfectly, but she couldn't cope with his suspicious and jealous behavior.

"When they are together they get on so well. But she can't cope with his jealousy." Miller and Rhys have recently been spending time together to promote their new movie The Edge Of Love. She admitted in a recent interview: "I must have a thing for Welshmen."