They used to be best of friends.
RadarOnline.com revealed how Lange entered rehab over Thanksgiving thanks to his latest health crisis.
Lange left his Pennsylvania addiction treatment center to do a show in New Jersey before heading back for more treatment.
However, he is getting his health back on track without the help of multi-millionaire Stern who seems happy to be with his with Beth.
Lange slammed Stern's latest autobiography on a radio interview.
He said: "You know what's going to aggravate me, is if he makes more money writing about me than I did writing about me.
"How much more money does he need to throw on the pile for crying out loud! He's writing a tell-all book, what's he going to tell? Everything is out there."Lange admits that Stern gave him several chances as his drug problems spiraled, however, the two men never reconciled after he finally left his show.
And Lange is bitter that Stern, 64, used his demise while he was still on air and that he could have done more to help. However, the multi-millionaire host claims that he was powerless to do anything to stop Lange from continuing to do drugs and booze. In contrast Stern and his wife looked fit and healthy when they appeared at an animal awareness event. Click through the images to find out more.
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Stern and his 45-year-old wife Beth Stern both looked glamorous as they attended the North Shore Animal League America's Annual Celebrity 'Get Your Rescue On' Gala at Pier Sixty at Chelsea Piers.
The DJ looked sharp in a black suit while his stunning wife wore a matching formal gown to the event.
Mega wealthy Stern has been known to keep his distance from his staff in recent years and does not get involved with their personal lives.
Lange recently stepped in recently to help sound engineer Scott Salem pay for some medical bills for his cancer stricken wife.
However, Stern stayed tight-lipped about if he had helped Salem and his family who launched a Go Fund Me page.
Lange claimed that Stern had been like a dysfunctional father figure to him as he battled his addiction issues.
However, there is no love lost now between the pair with Lange threatening to post his private cell number.
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