Diddy is cheating on his longtime girlfriend Cassie, according to online sources.

The news broke this morning - on popular L.A. blogger B Scott's page - that Diddy's been keeping an Asian model on the side. And Word is that Cassie now KNOWS ABOUT IT.

This is especially scandalous since Diddy and Cassie are expecting their first child together. MTO News confirmed that Cassie is currently pregnant - carrying Diddy's child.

Here's what B Scott is saying:

Sources exclusively tell lovebscott.com that Diddy has been quietly kicking it with 26-year-old model Jocelyn Chew. 

They recently spent some time in Miami together at the end of last month and hit up Drake’s opening show at Staples Center in Los Angeles just a few days ago.

Combs, 48, and Ventura, 32, met in the early 2000s after she was signed to his Bad Boy Records label. They were first linked together back in 2007 and have collaborated a few times together, including on his 2008 tune “Swagga Like Puff” and her 2009 song “Must Be Love.”

Here are pics of the girl:

The couple, who went public with their relationship in 2012 after years of speculation, have officially split, PEOPLE reported, too. Both went their separate ways months ago.

Reps for the stars had no comment, but a source tells PEOPLE, “the decision was amicable and they remain friends.”

“Cassie is going to focus on her music and acting career,” the source adds.

Neither Diddy nor Cassie have commented about B Scott's story yet. But MTO News reached out to Diddy and Cassie's reps, and are awaiting a response.