It was bound to happen eventually.

In a teaser for this Sunday's Keeping Up with the Kardashians, Scott Disick and Kourtney Kardashian go head-to-head over his decision to introduce their three children to his girlfriend Sofia Richie.

The mother-of-three gets pissed that her ex didn't run the move by her first, and he lashes out by calling her controlling. This seems healthy!

"It’s called giving someone a heads up and having a respectful conversation, giving someone the respect," she tells him during the confrontation.

"Sometimes you want to do certain things or you map out certain things but they don’t always go as planned. I think you expect a lot from a lot of people. Not always can your expectations always be met, even though people are trying their hardest to please you," he fights back.

Kourt should have to get clearance from The Lord before posting belfies like these!

cat in the hat

A post shared by Kourtney Kardashian (@kourtneykardash) on