On an upcoming episode of "Keeping Up with the Kardashians," Khloé Kardashian seemingly blames estranged husband Lamar Odom for influencing brother Rob Kardashian to using drugs.

The 27-year-old troubled man was clearly missing on the notorious clan's recent trip to Thailand. His absence during the vacation consequently made his family members quite emotional and worried, as they advised him to check himself into rehab for drinking sizzurp and smoking marijuana.

While Kim Kardashian did not even bother to care about what was going on with Rob, the matriarch Kris Jenner admitted that she felt scared for her son, especially regarding his various drug problems.

Similarly, Khloé was heartbroken because she said she believed that Rob's serious issues and depression stemmed during the time he lived with the former NBA player.

"Rob has said, 'Being in that house, it was so dark, and it made me do dark things,'" she confessed to her half-brother Brody Jenner.

Although she did not specifically mention Rob's drug problems, the 30-year-old reality star said that she feels guilty whenever she thinks of him for not being able to protect her younger sibling from Odom.

"Only Rob, Lamar and I know what happened in the house and what was going on," she said. "I'm a nurturer, and I want to protect everyone. I was not there to protect Rob. I was not even there to protect myself."

Meanwhile, Lamar Odom reportedly wants Khloé Kardashian to reconsider their relationship.

"He doesn't want to divorce her because he loves her so much," a source told Hollywood Life. However, he is apparently willing to sign the divorce papers, which was filed back in December 2013, if the feeling is not mutual and to make Kardashian happy.

"He's not holding anything up," the source said. "He'll do whatever it takes to make her happy -- even if that means signing that one piece of paper he's always dreaded signing."