He added: "There could not have been anybody more supportive of him being sober than Ariana".
He went on to say that she was constantly available to Miller and always asking what she could do to help.
He wrote: "This is not real, I'm waiting for you to call me and say it was just a joke".
"Whether he's an addict or not, the way that Mac partied was not healthy", Powers continued. [Ariana] was an unbelievably stabilizing force in his life and she was deeply helpful and effective in keeping Mac sober and helping him get sober. A friend claims that Grande wanted him to be healthy more than anything else.
Seven injured in Paris knife attack, terrorism not suspected
The victims were all rushed to local hospitals, where their conditions were described as "serious but not life threatening". There have been several knife attacks in France over the past few months, but few have resulted in terrorist investigations.
From peers like Chance The Rapper and Wiz Khalifa to ex-girlfriends such as Ariana Grande, everyone who seemed to have somewhat of a relationship with Malcolm James McCormick seemed utterly devastated by the news of his untimely passing.
Grande posted this attractive photo of Mac Miller on Instagram on Saturday.
He was found unresponsive around noon on Friday, September 7, in a bedroom at his San Fernando Valley home and was pronounced dead at the scene.
In the meantime, a deferred death certificate will allow Miller's family to move forward with burial or cremation.