Blac Chyna looks about ready to welcome her baby girl any day now, but her relationship with her fiance, Rob Kardashian, isn't exactly in the best of places, a source close to Rob tells ET.
Rob and Chyna currently live in separate houses -- Rob in Calabasas, California, and Chyna in nearby Tarzana -- and the source says the two have no plans to change their living arrangements once the baby is born.
"Rob and Chyna are going to keep their separate houses, even after their daughter is born," the source says. "Rob can be a very hard person to live with. Chyna wants a healthy environment and home for both her children. If there is any chance of not having that, she will make sure to avoid it at all costs."
According to the source, Rob is still not fully in touch with his famous family.
"No one ever knows what kind of Rob they are going to get that day," the source says. "He has his good days and he has his bad ones. There are days he responds to texts, days he doesn't."
Interestingly enough, the source says it's actually 28-year-old Chyna who keeps the Kardashian clan informed when it comes to their relationship.
"Chyna is the one who gives the Kardashian family updates on the pregnancy, baby and relationship," the source says. "Chyna became the person who kept the family in the loop since Rob will go silent for weeks on end. She knows that Rob sticks to himself at times, so she has taken on the role of making sure he stays close to the family."
"All the sisters, along with [Rob's mother] Kris, love Chyna," the source adds. "They are so thankful that she is in Rob's life."
In a September episode of Rob & Chyna, 29-year-old Rob expressed his doubts about living with Chyna, after she kicked him out of her home several times. "This cycle of me being kicked out the house has happened several times," he confessed to Scott Disick. "And usually I go right back, but I'm sick of it. So, I'm going to stay at my house in Calabasas for a bit."
However, it appeared to be all good between the couple on Tuesday night, when Rob Instagrammed photos of his pregnant fiancee sweetly posing for the camera. The pair are just days away from Chyna's due date.
ET spoke to Chyna in June, when she gushed about what kind of father she thinks the reality star will be.
"Overprotective! For sure," Chyna shared. "Loving, caring. Rob is just a big bundle of joy."