At the center of the prosecution's case is Sean 'Diddy' Combs' former girlfriend and protege, Casandra 'Cassie' Ventura.

While testifying in Sean "Diddy" Combs' sex trafficking trial on May 14, his ex Cassie Ventura shared the disturbing reason why ketamine was her drug of choice during his alleged "freak off" parties.

Combs is accused of exploiting his status as a powerful music executive to coerce women into drugged-up sex parties.

Cassie Ventura sent Sean Combs a message saying "nothing good comes out of fos anymore," using the initials for "freak off." "You tr ...

Casandra 'Cassie' Ventura said Sean 'Diddy' Combs physically abused her and gave her a black eye before her movie premiere.

Sean ‘Diddy’ Combs has officially turned down a prosecution ... women into protracted sexual orgies he referred to as ...