Kim Porter decided to confess the truth about her explosive relationship with Sean Combs a.k.a  “Diddy” and, most important, about its end. After a 10 year on-off romantic story, the model broke up with the famous rapper the last month.

Porter explains what happened in American Ok! Magazine new issue: "I'd been in an on-again, off-again relationship with Mr. Combs for about 10 years, and it came to a point where it was time for me to move on with my life. I had invested a lot of time in that relationship, and it wasn't going where it should have been going. So it was time to end it. 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."

The mother of Diddy’s three children also recognized Combs’ cheating over time : "I will never sit here and say that Puffy - or any man - is 100 per cent faithful. I just don't believe it.  I'm aware that he's cheated."

But Porter also denies that their breaking up has anything to do with recent rumors of an alleged romantic link between Diddy and actress Sienna Miller, stressing that they put an end on their relationship because they wanted different things.

She explained: "They're just friends. That wasn't the cause.”

Also, she dismissed any serious connection between Sean Combs and Jennifer Lopez - "It was an embarrassment. 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."

Despite Kim Porter’s declarations, Sienna Miller was noticed at Diddy’s popular yacht parties in South France in the week-end, augmenting media speculation.