Jen allegedly hit Ronnie in the face during an argument on the road. When the reality star apparently asked to be let out of the car she pulled over. However, he reportedly got caught in the seatbelt and when she drove away he was dragged across the road.
Jen was booked at the Clark County Detention Center for domestic battery. In addition, she is said to have attacked Ronnie just a few weeks ago.
The duo have certainly had their fair share of drama. Ronnie recently accused Jen of cheating on an episode of "Jersey Shore."
"I'm sure he's referring to when we were dating for about a month or two," the new mom told Us Weekly following the episode. "We hadn't established a real relationship. My ex came back around. I had mixed feelings at the time. We just got out of a 4-year relationship."
As documented on the MTV "Jersey Shore" revival, Ron and Jen's love story has never really been easy. In fact, right around the time she gave birth, the two got into an explosive fight on Instagram, which Jen revealed stemmed from her messy relationship with her ex.
"This is all part of the Instagram fight we got into because of this incident," she said. "When I came clean about this, he came clean about three times he hooked up with other girls in the same time period. We decided we wanted to be together and work though this and not to ever do it again."
During the fight in question, Ronnie posted the following message to his Instagram Story: "Note to self: Can't turn a natural-born HO, into a HOUSEWIFE. If you find them in the gutter, leave them in the gutter." He followed that up with another post that read, "If your significant other keeps sex videos of their ex, shouldn't they show enough respect to delete them, esp. after being in a new relationship for over a year?" he asked, along with a Yes/No poll for fans to vote.
Jen responded to the craziness with an Instagram Story of her own, writing, "Can't turn a coke head into a father!" She followed that up with another post that read, "When your man goes all Rob Kardashian on you," accompanied by a laugh-cry emoji.
All the posts have since been deleted, but we have the receipts here.