Tokyo Toni described the couple as “hot” before telling 93.9 WKYS that she has a “very close” relationship with the reality star.
Tokyo insisted that if she had got a bad vibe on Chyna’s boyfriend he would have been dumped very quickly, but instead she claims that she “felt safe with him” after they finally came clean about their relationship.
Rob, who has had a strained relationship with his mum Kris Jenner in the past, is to become a father for the first time.
Tokyo, who praised the momager on her Instagram page last week, said that she was “very pleased” that Kris was going to be one of the baby’s grandmothers.
Last week, she posted a message to her fellow ‘Glamma’, as she wrote: "You are going to be a wonderful Glamma- Bless your sweetheart @krisjenner.”
Chyna’s mum had also posted a sweet message about her future son-in-law Rob, but has since deleted the post on Instagram.
It read: "I so love Rob and I am so thankful to God that my daughter is happy with a real man. He spoils her absolutely rotten and with natural gifts of his time and attention.
"He has such a generous heart and fun disposition. He is far from a sucker and is the most down-to-earth person that I have ever met that is a celebrity."
