The "Keeping Up With The Kardashians" star - who shares Mason, seven, Penelope, five, and Reign, two, with the 34-year-old television personality - reportedly finds his new romance a little freakish.
Dad-of-three Scott, 34, and Sofia, 19, have gone public with their romance finally after being seen on a number of dates over the past few weeks.
When the show's host Ryan Seacrest pressed Kourtney on the subject, she continued, saying that, 'Since we've broken up - the last time, which was nearly two years ago - we've never been back together, even though we've traveled together with the kids.
Sofia also posted a picture of a dessert plate with "Congratulations Scott and Sophia", written on it in chocolate.
He added: "There is no connection, she made that very clear just now". He then less sweetly shared (and hopefully joked?) that even though they're not together, he still tries to have sex with her on a weekly basis. But, all in all, he seems to be doing great these days together with his new girlfriend, Sofia.
"It's obvious [Sofia] looks up to Scott".
A source revealed Kourt was less than pleased with how her former flame was behaving, and as a result has cut all ties from him completely. Kourtney just wants Scott to be his old self.
The saga had started in May, when Sofia and Scott were spotted cuddling on a yacht along the south of France, during the Cannes Film Festival.