Porter not blaming Sienna for Diddy split

LOS ANGELES, Aug. 8 (UPI) -- Kim Porter says she did not dump her long-time beau, U.S. music mogul Sean “Diddy” Combs, because he was cheating with Sienna Miller, TMZ.com is reporting.

Despite media reports to the contrary, Porter told OK! Magazine: "They're just friends. That wasn't the cause."

"It came to a point where it was time for me to move on with my life,” Porter said of her recent move from New York to Los Angeles. “In a relationship, it's important that the people are on the same page at the same time. And we weren't on the same page."

Porter said she knows Combs was not “100 percent faithful” during their stormy, 10-year relationship, which produced three children.

“I'm aware that he's cheated," she said.

She also said Combs’ decision to date Jennifer Lopez in 2000 “was an embarrassment,” but added: “I never thought it was real. I knew what was going on with him. Despite what you see in print and when the cameras are flashing, what's going on in someone's heart may be totally different. He was still (in love) with me. I never looked at their relationship (as serious.)"