After Scott downed a near-deadly combination of sleeping pills and alcohol, he checked himself into Mountainside Treatment Center in Connecticut.
In the sneak peek to Sunday’s episode, Disick comes home early from rehab and argues with longtime partner Kourtney after she asks for more space to figure things out.
An exasperated Disick declares, “How much more space do you need? We haven't slept together in five years. What's the difference? Honestly, though. I mean, I love you, yeah, but...”
Kourtney responds, “I don't want to just fall back into the same routine. Trust me, would I love to just say, ‘Yes, perfect, come back.’ Like, I want to make a change to make it better, you know, figure out who you even are.”
The couple has two children, Mason, 4, and Penelope, 2, and is expecting a third child in December.
“Kourtney and Khloé Take the Hamptons” airs on E! on Sunday.