Sienna Miller and fiancé Tom Sturridge's split may not be permanent... as friends say 'don't rule out a reunion'

Their split was only revealed this week after four years together.

But friends of Sienna Miller and Tom Sturridge claim the pair's parting may not be permanent and there's a chance they could reconcile.

A pal close to the couple, who have a three-year-old daughter Marlowe, told People magazine: 'They are over, but don't rule out a reunion.

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The end? Sienna Miller and Tom Sturridge, pictured in London in April, have split after four years together

The end? Sienna Miller and Tom Sturridge, pictured in London in April, have split after four years together

'Tom wanted to get married and have more children. Sienna didn't.'

The friend added their busy careers - Sienna, 33, receiving international acclaim in American Sniper and being a juror at the Cannes Film Festival while Tom, 29, has been working in London - put them under a lot of pressure.

The source added: 'This year everything exploded with Tom in London and Sienna leading a separate life in the U.S. and Cannes.'

Earlier this week, the The Sun newspaper reported Sienna and Tom called time on their relationship 'a few weeks ago', but are hoping to 'remain great friends' going forward,

The 33-year-old actress was spotted holidaying with the 29-year-old star earlier this month in Ibiza along with Marlowe. 

In happier times: The couple - who have been engaged for three years - are said to have called time on their relationship 'a few weeks ago', but are hoping to 'remain great friends' going forward

In happier times: The couple - who have been engaged for three years - are said to have called time on their relationship 'a few weeks ago', but are hoping to 'remain great friends' going forward

But it's claimed the Ibiza make-or-break holiday with Marlowe - who was born six months after Sienna and Tom announced their engagement in 2012 - was not enough to save their relationship.

A source told the paper: 'Tom and Sienna split a few weeks ago but still love and respect each other as friends and parents. It's a very amicable break-up and they intend to remain great friends.'

A spokesperson for Sienna Miller declined to comment to MailOnline - a representative for Tom Sturridge has also been contacted.

The news comes just two months after the American Sniper star was seen without her engagement ring while at Cannes Film Festival, prompting rumours their relationship could be on the rocks.

Wow thing: Sienna was last pictured looking incredible when she arrived at day eleven of Wimbledon, held at London iconic All England Lawn Tennis and Croquet Club on Friday 

Wow thing: Sienna was last pictured looking incredible when she arrived at day eleven of Wimbledon, held at London iconic All England Lawn Tennis and Croquet Club on Friday 

However, just last year, Sienna - who famously starred opposite her beau in a 2013 Burberry advertising campaign - gushed about Tom's soothing personality.

She said: 'He's the perfect balance to my lunacy, which makes him sounds really boring but he's not, at all.'

It's not the first time Sienna has been unlucky in love, having broken off her engagement to Jude Law in 2006.

The Alfie co-stars eventually rekindled their relationship although split once again in 2011, when she began dating Far from the Madding Crowd actor Tom. 

Sienna was last pictured looking incredible when she arrived at day eleven of Wimbledon, held at London iconic All England Lawn Tennis and Croquet Club on Friday. 

'All over': The pair starred together in a very racy Burberry campaign in 2013

'All over': The pair starred together in a very racy Burberry campaign in 2013

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