The former flames were first linked after they starred in Rainey Qualley’s NSFW music video for her song “Love Me Like You Hate Me.”
In the lawsuit, which was filed in Los Angeles Superior Court, Twigs accused LeBeouf of “relentless abuse” and infliction of emotional distress.
Twigs — whose real name is Tahliah Debrett Barnett — also alleged that the Even Stevens alum knowingly passed on an STD to her and covered it with makeup to keep the condition from her.
"Tragically, Tahliah later learned that she was not the first person that LaBeouf had transmitted his disease to," the papers stated. "Tahliah discovered that at least one other woman that LaBeouf had been in a relationship with had contracted the disease from him, and that he had engaged in similar attempts to hide his condition from that person while engaging in sexual relations."
The documents continue: “Despite experiencing a flareup of his symptoms, LaBeouf continued to engage in sexual relations with Tahliah, further exposing her to his disease.”
Twigs claims that his “reckless disregard for the health and safety of his partners makes him a danger to women everywhere.”
The singer — who dated LaBeouf for one year — also detailed incidents where LaBeouf once woke her up in the middle of the night by choking her, and while on a road trip, he threw her against the car at a gas station.
“What I went through with Shia was the worst thing I’ve ever been through in the whole of my life,” she told The New York Times. “I don’t think people would ever think that it would happen to me. But I think that’s the thing. It can happen to anybody.”
“I’m not in any position to tell anyone how my behavior made them feel,” LaBeouf said in response to the allegations. “I have no excuses for my alcoholism or aggression, only rationalizations. I have been abusive to myself and everyone around me for years. I have a history of hurting the people closest to me. I’m ashamed of that history and am sorry to those I hurt. There is nothing else I can really say.”
Following Twigs’ bombshell claims, Sia also came forward about working with LaBeouf.
“I too have been hurt emotionally by Shia, a pathological liar, who conned me into an adulterous relationship claiming to be single. I believe he’s very sick and have compassion for him AND his victims. Just know, if you love yourself- stay safe, stay away,” she wrote on Twitter on Saturday, December 12. “I love you @FKAtwigs. This is very courageous and I’m very proud of you."
Karolyn Pho, a stylist who also dated LaBeouf, detailed her time with the Disney alum. Pho claims LaBeouf pinned her to a bed and head-butted her, leading her to bleed.
“So much goes into breaking down a man or woman to make them OK with a certain kind of treatment,” she said.
LaBeouf’s costar Vanessa Kirby — who stars alongside LaBeouf in Pieces of a Woman, which comes out January 7 — said, "I stand with all survivors of abuse and respect the courage of anyone who speaks their truth.”
PEOPLE was the first to report the news about Qualley and LaBeouf's split.