It looks like Kim Kardashian has some serious questions for her sister Khloé. In a sneak peak of Sunday's episode of "Keeping Up With the Kardashians" on E!, Khloé finds herself accused of living a "double life."

But when Kim's accusations about Khloé's new friends and "supposed boyfriend" become too pointed, Khloé admits that her recent lifestyle is nothing like her trouble-ridden marriage with Lamar Odom. 

"Khloé, I just want to know," Kim corners her sister on the E! reality show. "Why are you lying to me about this supposed boyfriend?"

"That's ridiculous!" Khloé fires back, seemingly shocked by her sister's accusation.

In a confessional-style interview, Kim admits her frustration with her sister's secrecy.

"It's kind of annoying that I have to find out all this information on the Internet instead of straight from Khloé. If anything, my sisters are the first people I tell all my business to, so it's kind of weird that Khloé can be so secretive."

Kim then moves the subject from Khloé's alleged boyfriend, rapper French Montana, to her sister's mysterious group of friends.

When Kim questions what her sister does at night, Khloé responds," I'm with my friends."

"But who are your friends?" pushes Kim, still concerned with her sister's "double life." "I see you Instagram or I see photos, paparazzi photos of you and a whole crew heading on a plane."

After the round of questions from Kim, Khloé snaps.

"A double life is what I did [when I was married]," Khloé declares.

Opening up about her former husband, NBA basketball player Lamar Odom, the reality star goes on to admit that she was keeping secrets and hiding information about Odom's reported bad habits.

Kardashian and Odom separated this year amidst rumors that Odom had attended rehab for substance abuse.

Sunday's episode of "Keeping Up With the Kardashians" airs at 9 pm EST on E!

Kim also questions why Khloé hasn't had her "LO" tattoo removed. The younger sister rejects the idea, however, hinting that she may add more letters to change the word. Kim suggests adding a "VE" to spell "LOVE."