Demi Lovato will reportedly open up on her 2018 overdose in her forthcoming YouTube series.The Confident hitmaker spent two weeks recovering in Cedars-Sinai Medical Center in Los Angeles, followed by a stay in a rehab facility, after relapsing following six years of sobriety in July 2018.After managing to get clean and return to her career, the star has now reportedly agreed to detail her experience in the new online series, in an effort to quash speculation surrounding the incident.A source