NEW YORK — Casandra “Cassie” Ventura took the stand as the star witness at Sean “Diddy” Combs’ federal sex trafficking trial in New York Tuesday, relaying horrific beatings she endured by the multimillionaire hip-hop mogul and being forced to participate in dayslong, demoralizing, and disgusting sexual performances with male sex workers at his direction.

In devastating testimony, the “Me and You” singer, who is eight and a half months pregnant, described meeting Combs at the beginning of her career when she was 19, falling in love, and ultimately feeling she existed for no other purpose than to be his punching bag and the object in his sick sexual fantasies.

Ventura said Combs brutally assaulted her too many times to count and that she was coerced into lurid “freakoff” performances at least once a week for years, often where Combs directed multiple men to perform sex acts with her repeatedly and forced her to stay awake for days at a time.

“I just felt pretty horrible about myself. I felt disgusting. I was humiliated. I didn’t have those words to put together at the time, how I really felt,” Ventura testified. “I couldn’t talk to anyone about it.”

Asked how frequently Combs assaulted her during their roughly decade-long relationship that began in 2006, Ventura, who met him at 19 and is now 38, said, “Too frequently,” describing being left battered to a bloody pulp.

“He would mash in my head, knock me over, drag me, kick me. Stomp me in the head if I was down,” she said.

She said Combs, 17 years her senior, began courting her around her 21st birthday and that she had some of her first sexual experiences with him. Under questioning by Assistant U.S. Attorney Emily Johnson, Ventura said Combs introduced the idea of so-called “freakoff” sessions early into their relationship when she was around 22 and that he described them as “voyeurism.”

A visibly emotional Ventura recalled her stomach churning upon grasping what he wanted her to submit to, but feeling she loved him and had a responsibility to make him happy as he’d signed her to Bad Boy Records for a 10-album deal when she was 19.

During the years of abuse, Ventura said, she was ultimately continuing to participate in the sessions because Combs had been excessively violent towards her and threatened to release footage of her sleeping with male sex workers as blackmail.

Ventura said he became a controlling force who would micromanage what she wore, who she talked to, and virtually every moment of her day, incessantly calling and texting her and having his around-the-clock security track her down if he couldn’t make contact. His psychological abuse was constant, and his physical abuse was unpredictable, Ventura said.

“Make the wrong face and the next thing I knew, I was getting hit in the face,” she testified. “I need to ‘fix my face,’ ‘watch my mouth.’ Those were things that were said in the relationship a lot.”

Combs allowed only nine of the 10 albums promised to Ventura to be produced despite her recording “hundreds” of songs throughout their relationship, she said. He also forced her to reject different professional opportunities that arose, like invitations to participate in runway shows.

Ventura said having sex with strangers at Combs’ behest, which included days of extreme physical exertion and drug use, became a full-time job. She said copious amounts of drugs fed to her by Combs helped her “dissociate” and that the sessions, on average, ranged from 36 to 72 hours and that the longest one she remembered lasted four days. She wept tears from her eyes during one point of the testimony when talking about Combs sometimes directing multiple men to have sex with her, with him sometimes joining in.

“I just felt humiliated, it was disgusting, it was too much,” Ventura said of one encounter when she said Combs and other men urinated on her and in her mouth while she lay on the floor.

In another disturbing detail, Ventura said Combs often made men ejaculate on Ventura and then directed her to rub their semen on his chest in a separate room.

Wearing a white shirt, gray sweater, and gray slacks, Combs looked at Ventura while she testified with a blank expression. She did not look at him. Domestic violence allegations against the mogul exploded into public view in late 2023 when Ventura brought suit against the mogul, alleging he’d subjected her to years of rape, sexual assault and physical abuse. Combs settled the suit for a reported $30 million within a day and publicly apologized. A criminal probe soon followed.

Ventura detailed Combs’ extreme obsession with baby oil, more than 1,000 bottles of which authorities recovered at his properties last year. During “freak offs,” she said he heated bottles in sinks of hot water in hotel rooms, including at the Trump International in Manhattan, and once used it to fill up a blow-up pool inside a hotel room in L.A.

“There was oil all over the walls. The door handles. The bed, the sheets,” Ventura described the aftermath of “freaks offs.”

Ventura’s testimony came after jurors on Monday heard from a former security guard at the Intercontinental Hotel in Los Angeles who testified about Combs brutally assaulting her in 2016 and watched footage of the highly publicized assault. They then heard from a former male revue manager, who said Combs hired him to sleep with Ventura from 2012 to late 2013 and that he stopped participating after witnessing the mogul beating a distraught Ventura.

Prosecutors played the video again in court on Tuesday. Ventura said the assault occurred after a rare instance of her trying to leave a freakoff session after Combs punched her in the face, saying she was worried she wouldn’t be presentable for a movie premiere the following week.

In the prosecution’s opening statement Monday, the feds said Combs, while cultivating his reputation as a larger-than-life force in the hip-hop and entertainment industry, used his businesses and his wealth to force and manipulate women into the depraved “freakoff” sexual performances with assistance from a network of high-ranking employees and bodyguards.

Combs’ defense, in turn, said the case boiled down to a celebrity’s private sexual proclivities, “love, jealousy, infidelity, and money,” and a “swingers lifestyle” that may be offensive to some but is not illegal.

The 55-year-old Combs has pleaded not guilty to all charges and could face life in prison if convicted. He’s being held at the Metropolitan Detention Center in Brooklyn.

Ventura continues on the stand Wednesday.

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