Kourtney Kardashian is out of control with her revenge flings and wild all-night partying — and her family is beyond concerned!
"Kourtney's out gallivanting around all night these days," an insider told RadarOnline.com of the star who recently split from her longtime boyfriend, Scott Disick. "She's gone AWOL on her responsibilities and is trying to fix her heartbreak in the worst way possible."
As Radar reported, 36-year-old Kardashian was even caught leaving Justin Bieber's hotel suite recently at 4 in the morning.
Despite her insistence that she's just having fun, "Kourtney's still hurting badly, she gets drunk and does crazy things," said the insider. "Chasing down all these young guys is nothing more than tragic."
It's also tiring. "It's getting worse too because she's always so cranky and exhausted, the only release she gets is from partying," said the insider. " Everyone wants her in serious therapy or rehab. All the emotional instability, boozing and partying is a recipe for disaster."