The 31-year-old reality star discussed her family's complicated relationship with the 27-year-old model following reports she and Blac Chyna had a "screaming match" over Rob.
"My brother is dating Blac Chyna. My sister Kylie [Jenner] is dating Tyga, who is Chyna's baby daddy," Khloe explained on Wednesday's episode of Kocktails with Khloe.
"It's like a soap opera, so it sounds very dramatic. Which it is," she acknowledged. "But I actually haven't seen Chyna in a few years. But her and I did not get into a fight."
RadarOnline reported Khloe and Blac Chyna had an "ear-splitting explosive" phone call over the model's romance with Rob. Khloe previously clashed with Blac Chyna's friend Amber Rose after she dissed Kylie and Tyga's relationship.
Rob and Blac Chyna were first linked in January and have been inseparable since. The 29-year-old reality star's mom, Kris Jenner, recently said Rob is doing well but admitted she doesn't know much about his relationship.
"I really haven't seen her that much and I don't know her as well as everyone else, but she seems like a really nice girl," she said of Blac Chyna. "I just haven't been around her too much."
Blac Chyna was noticeably missing when Rob celebrated his birthday with his family, including Kylie and Tyga, this month. The model and Tyga were together from 2011 to 2014 and share 3-year-old son King Cairo Stevenson.