In this sneak peek from this week's Keeping Up With The Kardashians, Khloe and Kim are in Armenia and Khloe is upset that she doesn't have her Blackberry with her because it has Lamar's number (in a previous KUWTK, Khloe said he changes his number all the time, which would explain why she didn't have it memorized).
Kim is clearly annoyed that Khloe wants to call him and when she asks Khloe about it, Khlo says she just wants to check and make sure he's all right. "Can't I do that?" she asks. "You just deserve SO much better," Kim replies.
In a confessional with the camera, Khloe says that she and Lamar loved each other very deeply and she isn't willing to just let it go and pretend like the whole thing never happened. "If I feel the need to check on him, that's my prerogative and I'm gonna do it!" she explains.
It's clear that Kim is just not having it and things get a little tense as Khloe tells her that she doesn't really care what she thinks, she's entitled to call or check on whoever she wants to.
**Keeping Up With the Kardashians returns this Sunday at 8pm ET/PT on E!**