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Jonathan Majors’s ex-girlfriend Grace Jabbari testified about his “violent temper” during his misdemeanor assault trial in Manhattan.

Jabbari took the stand on December 5 and described several incidents that occurred months before his arrest for assaulting her in March.

Jabbari said she was fearful of Majors’s outbursts while dating him. The actor even described himself to her as “a monster,” she said.

The British native told the court she felt as though she were “walking on eggshells” around Majors due to his quick temper. She claimed he berated her, called her names like “idiot” and “alcoholic,” broke candles and knocked headphones out of her ears.

“I felt like I had to be perfect,” she said. “If I did one little thing or said the wrong thing, the temper would show. I wanted to avoid it.”

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Jabbari (pictured) broke down and cried on the witness stand, while apologizing to the jury.

She described herself as a professional dancer who met Majors while working on the set of Ant-Man and the Wasp: Quantumania in the fall of 2021.

She said Majors was “loving and caring and wrote me poetry” at first, but she soon saw a dark side to his personality.

Majors became upset when Jabbari mentioned an ex-boyfriend and stood over her yelling while she sat on a couch. “It was the first time I felt scared of him,” she said. “And I knew never to mention my ex.”

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Prosecutors showed the jury surveillance video of Majors slamming Jabbari against the side of an SUV several times. Then later he is seen grabbing her arm and forcefully leading her across multiple lanes of traffic.

Majors faces two counts of misdemeanor assault and two counts of harassment for allegedly attacking Jabbari.

He claims she bloodied his face when she saw a text from another woman on his phone on March 25.

Majors faces up to 1 year in jail if convicted.