Umm what?

Demi Lovato's drug dealer Brandon Johnson for some reason gave an extensive interview to TMZ over the weekend, and admitted that he supplied the singer with drugs just hours before her overdose. What's more, he swears he told her that they weren't your typical pharmaceuticals, and she didn't care!

Johnson revealed that Demi texted him and asked him to come over at 4am, and that she was "a little drunk" when he got there. The two did drugs together before he "tucked her in bed" and left around 8am, and he insists there were no signs she was in trouble.

However, he did cop to the fact they were using "aftermarket" pills, which are commonly laced with deadly fentanyl and often smuggled from Mexico. Translation - they were incredibly dangerous.

You've gotta watch this whole thing, it's pretty unbelievable!