Adrian Grenier and Isabel Lucas Split
The pair broke up about three weeks ago, right after the accident that left LaBeouf with a crushed hand. "It wasn't working out," says a source. "Adrian saw her with Shia and that was kind of it – the crash, their hanging out. He obviously didn't appreciate it."
Lucas, 22, was the passenger in LaBeouf's car. She was treated for minor bumps and bruises at the hospital and released.
Lucas's rep confirmed to PEOPLE that the actress "is single."
According to reports, Lucas had been dating Entourage star Grenier, 32, for several months.
A rep for Grenier wasn't immediately available for comment.
Reporting by JENNIFER GARCIA and MARLA LEHNER
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