Diary entries of the late Robert Kardashian - obtained by In Touch Weekly - appear to suggest Kim Kardashian and her sisters were left by their mother Kris Jenner while she began an affair. The pages were reportedly provided by Robert's widow Ellen Kardashian and feature a "heatbreaking account of Kim, Kourtney and Khloe's childhood with mom Kris Jenner."

The excerpts show Robert' feeling about Kris' alleged affair with soccer player Todd Waterman, "Todd drove up to the back gate & parked. He went in the house & slept in my bed... Khloé & Robert were in the house." On December 15, 1989 he wrote, "She left [the] kids & screwed all nite," before adding on Christmas Day, "I was home alone with 4 kids. I put them to bed & played w/them."

One Kardashian insider tells In Touch, "The girls all resented their mother after Kris and Robert broke up. They knew that so much of the problems were Kris' fault. Only years later did Kris stop partying so much and start focusing more on her family." After six years of dating, Robert and Ellen Kardashian wed in 2003, just two months before he died. "There was a lot of friction between the girls and their mother," Ellen tells In Touch of Kris Jenner. A spokesman for the Kardashian matriarch said, "We have no knowledge of these diaries existing and these accusations are ridiculous and not true."

Kim Kardashian has slammed Ellen for speaking with the magazine, tweeting, "How can such a piece of trash even mention my father's name! You married him on his death bed."

Watch A Glammed Up Kim And Khloe Kardashian Arrive For David Letterman: