Sienna Miller has split from her lover Jamie Burke.
The couple, who have been dating for eight months, reportedly decided to part ways following a series of heated rows.
Musician Jamie was said to have been "furious" with the 'Layer Cake' actress for partying with P. Diddy after the Concert for Diana earlier this month. The couple, who have conflicting work schedules, were also said to be struggling to maintain a long-distance relationship.
A source said: "Things have been difficult for a while now. He is based in New York and she is mostly in London. They are both so busy that they just don't get to spend much time with each other. They couldn't make it work, so they split."
Jamie, who fronts rock band Bloody Social, recently complained he was tired of only being known as Sienna's boyfriend.
Sienna has just finished filming new Dylan Thomas movie 'The Edge of Love'in Wales and recently launched the clothing range 2812 with her sister Savannah.
Sienna, 26, and P. Diddy, 37, first sparked romance rumours in January when they were seen partying in New York, before heading back to her hotel. However, the hip-hop star was quick to quash speculation the pair were anything more than friends, saying at the time: "I was just being a gentleman and dropping her off."
The pair sparked fresh speculation on July 1 after Sienna went to the rapper 's post-Concert for Diana party at London nightclub Paper. Sienna and Diddy were together almost all evening and moved to a private area of the club to relax behind a curtain.
Diddy's relationship with Kim Porter - his on/off partner for 10 years - also ended this month. Kim - who has three children with the hip-hop mogul - said the split was for the best. Sienna's representative has denied she is romancing Diddy, saying: "Reports of Sienna being linked with P. Diddy are categorically untrue." | 
