Did Kim Kardashian just cross a line? In a tense new sneak-peek clip for Keeping Up With the Kardashians, Kim confronts her mom, Kris Jenner, for meddling in Khloe Kardashian and Lamar Odom’s relationship.

“You just have a sentimental thing with Lamar, and at some point you’ve got to get over it because what you did created a bigger stream of problems,” Kim, 35, tells her upset momager.

But after Jenner, 60, insists that she just “wants what’s best” for Khloe, Kim shoots back, “Her talking to Lamar and you saying Lamar deserves a second chance, that is so wrong. That’s being a bad mother.”

Naturally, Kris is flabbergasted that her daughter would speak to her that way. She tells Kim that her words hurt, and the matter-of-fact mother of North West (and now Saint) replies, “It’s the truth, and the truth hurts.”

Watch the painful clip, and tell Us: Are you on Kris' or Kim’s side?

Keeping Up With the Kardashians airs Sundays at 9 p.m. ET on E!

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