Scott Disick believes he's ''immune'' to anything Kourtney Kardashian throws at him.

The 32-year-old star, who was dumped by the 36-year-old beauty earlier this month after he was spotted partying with ex-girlfriend Chloe Bartoli in the South of France, reportedly isn't worried about being dropped from her and her family's reality TV series 'Keeping Up with the Kardashians'.

A source said: ''He's gotten away with so much for so long, he believes he's immune to anything they can throw at him. But the truth is, it's not going to take much for the Kardashians to ruin him completely.''

Kourtney and her family, including mother and manager Kris Jenner, are prepared to turn their backs on Scott, with whom she has three children, Mason, five, Penelope, three, and Reign, seven months, for good unless he seeks treatment in rehab.

The insider told Star magazine: ''They aren't messing around. If it weren't for the Kardashians, Scott would be a broke, drunk nobody.

''Everyone in the family feels completely betrayed by Scott. Kris truly looked at him like a son.''

Camera crews for the family's E! reality series are said to have stopped filming Scott, who has appeared on the show since it launched in 2007, separately for fear of angering Kourtney.

The source explained: ''Kourtney has a producer credit and Scott doesn't, so it's easy to get rid of him. Unless he goes to rehab, E! will drop him completely.''

The former restaurateur has spent three brief stints in rehab over the past year, but is still struggling to get his life back on track following the deaths of his parents, Bonnie and Jeffrey, within three months of each other in late 2013 and early 2014.