Some people just don't get along!
Given Khloe Kardashian's opposition to her sister Kim's 2011 wedding to Kris Humphries, it should come as no surprise that the reality star has some harsh words for the NBA player.
In her new book, Strong Looks Better Naked (via Us Weekly), Khloe claims that Kim wasn't treated well by her husband of 72 days, even going so far as to call him her "least favorite" of Kim's exes.
WATCH: Khloe Kardashian Opens Up About Lamar Odom and James Harden: 'I Love Who I Love'
"He didn't treat Kim with respect," Khloe writes in her book. "He wasn't kind, and, unfortunately, he didn't get my point, which I guess is one of the many reasons he is an ex."
Khloe goes on to claim one moment where the basketball player allegedly compared he and Kim's relationship to Khloe's relationship to her husband Lamar.
WATCH: Khloe Kardashian Focusing on Lamar Odom’s Health Over a Relationship With Him
"'Why don't you cook for me?' he told Kim. 'Khloe cooks for Lamar all the time,'" Khloe writes. "This happened in front of me, and it really upset me. I told him, 'That is so rude! How dare you compare our relationships? And why are you being so aggressive? The right thing to do is to ask Kim if she'd consider cooking for you from time to time.'"
Meanwhile, 31-year-old Khloe is currently dating basketball player James Harden,though she recently called off her divorce to her estranged husband, Lamar Odom, as he continues too recover in Los Angeles from being found unresponsive in a Nevada brothel.
WATCH: Kobe Bryant on Lamar Odom's 'Amazing' Progress: 'It Truly Is Remarkable'
"I’ve chosen to keep things closer to my heart until I figure it out," Khloe told Yahoo! Style this week of her relationship drama. "I love hard, I love who I love, and I don’t make any qualms about it."
Watch the video below.