'Affluenza' Teen's Parents 'Set No Boundaries' With Him 'Drinking Alcohol & Taking Cocaine,' Claims Attorney Of Boy Injured In Booze-Fueled Joyride

Not only did Ethan Couch kill four people during his drunken joyride last June, but he injured a 13-year-old boy whose family has filed a civil lawsuit against what their attorney calls "profoundly dysfunctional parents" who "improperly set no boundaries."

Lucas McConnell and his parents' attorney believe Couch's family and the 16-year-old's psychologist, Dr. Dick Miller, are guilty of "gross negligence," he tells RadarOnline.com in an exclusive interview.

As RadarOnline.com previously reported, Texas judge R.H. Wallace Jr. recently ordered Dr. Miller to hand over his records of treatment and visits with Couch, which led to his infamous "affluenza" diagnosis.

"We are interested in receiving the documents because of their relevance in helping prove the elements of gross negligence we have alleged against the Couch family and their company Cleburne Sheet Metal. Dr. Miller has testified he saw all of them multiple times and treated Ethan Couch for a number of things," attorney Greg Coontz told RadarOnline.com.

"In addition Dr. Miller testified based on his treatment of Ethan, Fred and Tonya Couch, he believes Fred and Tonya were 'profoundly dysfunctional parents' who improperly set no boundaries."

What's more, Coontz claims that Ethan had been abusing drugs and alcohol for years before the deadly crash — which landed him with 10 years of probation instead of any jail time — and it was his parents who enabled him.

"Ethan Couch had used alcohol and drugs since he was thirteen years old. Fred and Tonya Couch knew Ethan had alcohol at their Burleson Retta home where he lived by himself without parental supervision at sixteen years of age. Ethan learned faulty rules – namely 'we have the gold, we make the rules,'" Coontz alleged.

"Fred and Tonya Couch’s lack of action after the traffic stop where Ethan was found with alcohol and a half naked underaged intoxicated girl meant that all conditions were met for the June 15, 2013 tragedy to occur, it was just a matter of time. In fact, Ethan’s criminal behavior, drinking alcohol and taking cocaine, increased afterwards," Coontz added.

McConnell did not suffer extensive physical injuries from the accident, but Coontz tells RadarOnline.com he's "seen a counselor on a regular basis since the accident almost a year ago and continues to have nightmares about the event."

RadarOnline.com has exclusively obtained McConnell's powerful Victim Impact Statement which was given to the court during Ethan's initial sentencing. The 13-year-old boy, whose family was close friends with Couch's family before the incident, says he's trying to forgive Ethan but wanted the maximum sentencing given.

Ethan's sentencing from Judge Jean Boyd of just 10 years probation and rehab sparked public outcry that even led to a petition in which on signee said, “This sentence is a slap in the face the families of those who were killed. He’s sent to California to a spa-type center while the families of the victims get to go to cemetery.”

What's more, as RadarOnline.com reported on June 6, taxpayers are footing the bill for the teen’s cushy $438,000 per year treatment.