Moving on: Diddy Believes Cassie Cheated on Him…

Sean “Diddy” Combs is finally moving on from ex-girlfriend Cassie, and for good reason.

E! News has learned Diddy feels betrayed after learning that Cassie supposedly cheated on him with the trainer he paid for.

While the pair split several months ago, Diddy believes the illicit affair between Cassie and Alex Fine started before they officially called it quits, and when he was still paying for Fine’s services.

Furthermore, Cassie officially started dating the bull rider not long after her breakup from the rapper. The singer made the romance Instagram official on Dec. 30, when she shared a photo of herself smooching the celebrity trainer at a Christmas party.

Despite the affair, a source told People in October, “The decision was amicable and they remain friends.” It’s also worth mentioning that the rapper and singer were on and off for more than a decade.

Even after their split, Diddy and Cassie remained on good terms, especially following the death of Diddy’s ex Kim Porter. One month after the couple parted ways, they reunited in Los Angeles.

A source told E! News exclusively, “Cassie reached out to Diddy… sending him a text message checking up on him and expressing her condolences.”

– E!News