How Pete Davidson's 'unpredictable' career and 'misery' after Madelyn Cline split led to rehab stint

Pete Davidson's 'unpredictable' behavior and heartbreak over his split from Madelyn Cline led to him checking into a rehab facility - an insider has claimed. Last month it was revealed the comedian, 30, had entered a wellness facility seeking treatment for his mental health - just days after admitting to fans that he quit doing drugs .