Sophia Bush has revealed details of the sexual harassment she suffered at the hands of Mark Schwahn while filming “One Tree Hill”.

Talking to Andy Cohen on his Sirius XM show, Bush recounted an on-set incident in which she was inappropriately grabbed by Schawhn, who was the creator and head writer of the popular WB/CW drama series.

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“The first time Mark Schwahn grabbed my a**, I hit him in front of six other producers, and I hit him f***ing hard,” the 35-year-old actress said.

Years later, Bush learned from one of the show’s writers that Schawhn had cursed her out in front of other staff members following the incident.

“He came back being like, ‘That f***ing entitled b***h! Who does she think she is?’ And this very sweet man Mike, who I love and is like a ride or die for me, was like, ‘Maybe you shouldn’t touch the girls.’”

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The “Incredibles 2” star also said that Schwahn became “super-obsessed” with one of the other actresses on the show and that “he would try to bang down her hotel room door in the middle of the night.”

Last November, Schwahn was accused of inappropriate sexual conduct by 18 female “One Tree Hill” cast and crew members, including Bush, Hilarie Burton, and Bethany Joy Lenz. The women released a joint statement after staff writer Audrey Wauchope tweeted about the harassment she and her writing partner Rachel Specter endured.

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Shortly after the “One Tree Hill” stars published their letter, Schwahn was also accused of sexual harassment by the women of his follow-up TV show “The Royals”; the disgraced showrunner was later fired by the E! network.

Following Bush’s comments on Radio Andy, her former “One Tree Hill” co-stars tweeted their support. Burton praised Bush, calling her her “soul sister.”

Kate Voegele, who played a recurring character on the show in the later seasons, also retweeted Burton and sent her love via emojis.

Schwahn has yet to speak out publicly regarding the allegations.