"I had a really bad past relationship where the girl was cheating and having sex with so many different people,” Rob, who famously dated both Rita Ora and Adrienne Bailon, noted.
"I'm not comfortable in my skin, I'm not comfortable with this weight, I feel like I'm not happy with anything I do," he said.
His lady love was not impressed, calling him “f**king whack,” but she later came around and apologized.
"I can understand why you feel a little bit insecure about your body and stuff," Chyna said. "Maybe I need to be more supportive of that and not be so hard on you, too. I'm just sorry for being rude."
For more from the emotional second episode, watch the clip below!