'He's going to cheat on you and it'll be your fault': Kim Kardashian doesn't hold back as she warns Kourtney she'll lose Scott Disick

She's had a string of failed romances - including a 72-day marriage - but that didn't stop Kim Kardashian from giving relationship advice to her sister Kourtney.
In a preview for an upcoming episode of Kourtney And Kim Take Miami, the 32-year-old can be seen telling her older sister that Scott Disick is going to cheat on her if she doesn’t show him more affection.
The nonchalant reality star only adds insult to injury when she then claims that should this happen, it would be entirely 33-year-old Kourtney’s fault.

Relationship advice: Kim Kardashian, who was married for 72 days, told her sister Kourtney she needs to pay more attention to her partner Scott Disick in an upcoming episode of their reality show

Lessons in how to keep a man: The reality TV star said Kourtney should devote more time to her partner rather than just her children

Kim gives the warning out of the blue after Kourtney unsuccessfully attempts to find Scott and asks Kim if she knows his whereabouts.
‘He took the boat out,’ Kim says while reclining on her bed and barely glancing up from her computer screen. ‘I think he's just kind of trying to, like, do his own thing.’
She adds: ‘He just feels like you only care about the kids.’

Doomed? Kim told Kourtney it would be her fault if Scott cheated, and added that she'll end up alone

Kourtney unapologetically states that the couple’s two children, Mason and Penelope, are her first priority, but Kim is having none of it.
‘You don't want even alone time with Scott,’ she chides. ‘It's weird.’
Kourtney continues to stand up for herself but it’s clear she is growing increasingly concerned. ‘For me, I like doing stuff all together as a family,’ she explains.

Tough talker: Kim, pictured left on Friday and Kourtney, right, earlier this week

‘He's gonna cheat on you and it'll be your fault,’ Kim hits back. ‘You just don't put in any effort. You're going to lose him. No joke.’
In case she hadn’t drummed her point in enough, Kim adds: ‘You're literally going to end up, like, alone.’
After attempting to shrug off her sister’s cruel prophecy, Kourtney later admitted her concerns to the camera.

Family matters: Kim claims Scott feels that Kourtney 'only cares about the kids', but Kourtney was unapologetic about putting Mason and Penelope first

‘Just hearing Kim say those words really just freaks me out,’ she said.
‘Not that Scott would ever cheat on me, but I just really don't want this for my relationship.’
The new episode of Kourtney and Kim Take Miami airs on Sunday at 9pm on E!.

Working it out: Kim was seen arriving at the Tracy Anderson Gym in Studio City in the early hours of Friday morning with mother Kris Jenner