The 28-year-old reality star tried to make things right between him and his mother by getting her some balloons and delivering a heartfelt apology.
"Of course I feel terrible that the shower they planned for me got ruined," Rob said in a solo interview. "Sometimes when Chyna and I aren't doing so well, I let it get the best of me and I need to work on that."
For her part, Kris was very forgiving, telling Rob, "We all love you so much and we’re so happy that this is happening. We can't wait till she's born."