Sean Combs sex trafficking trial updates: Cassie's testimony ends after days of describing abuse

There was infidelity and jealousy on both sides in Cassie Ventura's tumultuous relationship of Sean Combs, Ventura testified under cross-examination.

The defense instructed Ventura to read aloud a past message she sent to Combs that read: "You are making me look like a side piece and that's not what I thought I was."

Defense attorney Anna Estevao asked Ventura, "It was disappointing and hurtful to find out you weren't the main girlfriend?"

"Yes," Ventura replied. "It didn't pertain to every situation but I was definitely jealous of certain situations he was in."

"If he suspected you were in relationships with other men, he became insanely jealous?" Estevao asked, referring to Combs. "That's when he lost his temper?

"A number of times," Ventura answered.

Ventura had previously testified that Combs "lunged" at her during a "freak off" when he examined her phone messages and discovered that she had been seeing Scott Mescudi, aka rapper Kid Cudi.

"Did you feel justified in cheating on him with Mr. Mescudi because of Mr. Combs' infidelities?" Estevao asked.

"I could have, I don't know," Ventura answered.

Ventura testified that she would have text-message arguments with Combs about cheating, during which he would bring up Kid Cudi.

"He would bring it up quite a bit," Ventura told the court.

Ventura testified that in 2015, she was in South Africa shooting the film "Honey 3: Dare to Dance" when she learned Combs was back with a former girlfriend. "I was definitely angry," Ventura testified.

At the same time, Ventura said she began a relationship with the actor Michael B. Jordan.

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Cassie said Combs once communicated to drug dealers in Los Angeles to stop delivering drugs to her.

"At some point it happened," Cassie said, though she said she didn't know if it was 2016, when Combs' attorney suggested it happened.

She also acknowledged that Combs had recommended that she get help for her drug issues. Cassie said Combs only wanted her to do drugs with him rather than with friends.

Cassie Ventura admitted under cross-examination she "had some jealousy" of Kim Porter, mother of four of Sean Combs' children.

She also conceded that she became upset when she learned Combs had not broken off a relationship with a woman he had previously dated.

"Spending time with other women prompted arguments?" defense attorney Anna Estevao asked.

"Yeah," Ventura responded.

"And Mr. Combs had suspicions you were not faithful to him, correct?" Estevao followed up.

"Yeah," Ventura responded, adding that it could be "a little scary" when Combs suspected she had been unfaithful.

The defense has previously asserted that Ventura and Combs' relationship was plagued by infidelity, jealousy and violence on both sides.

The text exchanges the defense introduced Thursday included sexually explicit messages and talk of arranging "freak offs" commingled with more mundane subjects, like a discussion of going to see the Broadway show "The Book of Mormon." The defense attempted to assert that Combs and Ventura enjoyed moments of what Ventura previously testified were "romantic vibes," while also showing that she was a willing and eager participant in the "freak offs."

Combs' lawyers said they don't expect to be done questioning Cassie until the end of the day on Friday. If that happens, it's possible she'll need to come back to court on Monday so prosecutors can ask her more questions during a phase of testimony known as re-direct.

Subramanian noted that the sides had previously agreed that she would be done by week's end, since she's pregnant and due to give birth soon to her third child.

The defense's revised timing "is the exact opposite of what I was told," the judge said.

"That is why there is a sword that I must fall on," Combs' lawyer Marc Agnifilo responded. He suggested that prosecutors muddled the timing by calling two witnesses before bringing Cassie to the stand.

Before the jury returned from lunch, Judge Subramanian made clear he expected the defense to finish its cross-examination by the middle of the day Friday.

"You have a day and a half. We should be done by the lunch break Friday," the judge said.

He noted that Ventura is "not the kind of witness that is fighting" the defense questions and suggested the defense "streamline" its cross-examination.

The cross-examination so far has come in fits and starts with defense attorney Anna Estevao unable to establish a consistent rhythm. She has sometimes failed to properly introduce exhibits and prosecutors have objected to several of her questions.

How it lands is up to a jury that skews male and skews older. The defense strategy so far is to show examples that appear to show Ventura's willingness, eagerness and agency as they seek to underpin Combs' assertion that he did not commit sex trafficking.

The Associated Press and ABC News contributed to this information.