Kim Porter and Diddy

P. Diddy and lover Kim Porter have reportedly split. Porter - who has three children with Diddy - is said to have moved out of the music mogul's apartment and vowed never to return. A source told the New York Post newspaper: "Kim is in Louisiana filming 'Mama, I Want to Sing!' right now, and when it's done she's moving to Los Angeles."She is focusing on her career as a model and actress and raising her children. They are the best of friends, but they just can't be together right now."Porter - who has dated Diddy on and off for 10 years - has bought a luxury Beverly Hills home for her and the couple's children, 10-year-old Christian,and seven-month-old twins D'Lila and Jessie.The model-and-actress also has a son with former lover musician Al B. Sure. This isn't the first time Diddy and Porter have broken up. The couple spent several years apart, during which Diddy dated Jennifer Lopez. Rumors of a relationship rift began in January when Diddy was seen partying with Sienna Miller 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 romance rumors on Sunday night after Sienna went to Diddy'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 representative has denied the break-up rumors, saying: "There is no truth to this."