Kid Cudi and Diddy have never officially collaborated on a track. But in 2020, Diddy revealed that Kid Cudi was in the booth while he recored his 2010 album, “Last Train To Paris.”

Through Revolt, a media organization Diddy co-founded, the he shared multiple behind-the-scenes videos of the studio sessions for the 2010 album. One showed Kid Cudi rapping “Now or Never” over a beat.

In 2023, Cassie filed a lawsuit against Diddy, accusing him of rape, physical abuse, and controlling her throughout their relationship, which lasted from 2006 to 2018.

Diddy denied the allegations in the lawsuit.

The suit was settled a day later, but Cassie repeated many of the allegations during her testimony in the first week of Diddy’s trial.

In the filing seen by Business Insider, Cassie said she dated Kid Cudi in 2011 during a “rough patch” in her relationship with Diddy.

Cassie said Diddy looked through the her phone and emails during a “freak off” and became “enraged” after finding messages between her and Kid Cudi. Cassie said he lunged at her with a corkscrew between her fingers, and she fled to Kid Cudi’s home.

She said that when she returned to reconcile with Diddy he hit her several times and kicked her in the back as she tried to run out the door.

Cassie said she later went to her parents’ home in Connecticut where her mother took pictures of the bruises.

Cassie also testified that Diddy threatened to hurt her and Kid Cudi.

On Tuesday, Regina Ventura, Cassie’s mother, testified that her daughter texted her in 2011 that Diddy had threatened to release porn featuring Cassie and physically harm her because of the fling with Kid Cudi.

Regina Ventura also testified that she had to borrow against their home to pay for $20,000 Diddy demanded for Cassie’s unpaid “expenses.”

“He was going to need $20,000 to recoup money that he had spent on her because he was angry that she had a relationship with Scott Mescudi,” Ventura said, adding that she paid because she was worried about her daughter.

Regina Ventura said the money was sent to Bad Boy Records, the record label Diddy founded, but the company returned it four or five days later without any explanation.

Cassie claimed in her lawsuit that Diddy told her in February 2012, while they were at Paris Fashion Week, that he wanted to blow up Kid Cudi’s car while he and his friends were home.

Cassie said in the lawsuit that Kid Cudi’s car exploded in his driveway around this time, but she does not accuse Diddy of carrying it out.

In November 2023, a spokesperson for Kid Cudi told The New York Times that his car did explode, saying, “This is all true.”

Kid Cudi may explain how and why the car exploded in his testimony.

Diddy’s representatives did not immediately respond to a request for comment from BI.