The oldest son of Jim Bob and Michelle Duggar, Josh Duggar, is being sued by porn star Danica Dillon, In Touch has learned exclusively.

In the legal papers, Danica (real name: Ashley Stamm-Northup) alleges that Josh twice committed battery against her when they had sex in March and April this year — a story In Touch broke in August — and is asking for $500,000 because, she says in court papers, the incidents were so awful they caused her "physical and emotional injuries" and she felt “as if she were being raped.”

RELATED: Jill Duggar Shares New Video of Baby Israel Walking — Watch it Here

Josh and Anna.

Not only does Josh have to answer to Danica, but he’ll likely be questioned about all of his past sexual misconduct. Nothing will be off-limits — including still-hidden details about cheating on his wife and having a porn addiction, as well as how he molested five underage girls, including four of his own sisters, as a teen.

RELATED: Another Baby For Anna and Josh Duggar? Shocking Details

“The defendant may be subject to [having to talk about] his prior bad [or] sexually abusive acts at trial,” Danica’s attorney Marc Frumer tells In Touch exclusively. “They are all relevant if he takes the stand.”

Josh checked into a long-term faith-based rehab program in August in the wake of the Ashley Madison cheating website hack outing him as a paying customer. He then admitted to cheating and having a porn addiction. In September, his family made their way back on TV: TLC announced that Josh’s sisters Jill and Jessa would be starring in their own network specials.

“I don’t believe there should be any spin-off shows whatsoever,” says Stephanie Ovadia, who is Danica’s legal consultant. “I think [the family] needs to have some accountability to the public.”

Jim Bob and Michelle waited at least 16 months to inform authorities after Josh confessed to molesting his sisters in 2002, then tried to cover up his crimes for years. They could be asked about all of Josh’s horrible behavior in an attempt to “show a pattern,” Frumer says, especially “if Josh denies the prior bad acts.”

RELATED: Another Woman Comes Forward in Josh Duggar Cheating Scandal

“The defendant has a history of sexual and physical abuse towards women, particularly those he perceives as vulnerable or weak,” Danica’s attorney explains. “He has to be held responsible for his actions.”

For more details on the accusations against Josh Duggar, pick up the latest copy of In Touch magazine, on newsstands now!