Rob Kardashian and Blac Chyna
Rob Kardashian is expecting his first child with Blac Chyna REUTERS

Rob Kardashian is reportedly very insecure in his relationship. The 29-year-old sock designer is expecting his first child with Blac Chyna.

A source told E! News: "Rob and Chyna are fine. They are together, but it's just difficult right now."

"They are living separately because that makes for a more harmonious life for the two of them. They just bicker a lot. They argue but ultimately they love one another," the insider added.

In January, Chyna went public with the couple's romance by posting a photo of her snuggling into Kim Kardashian's little brother's tattooed arm on Instagram. Following that, Rob had posted a meme that suggested Chyna was pregnant with his child.

Meanwhile, Rob is looking forward to be a father. The reality star talked about his bond with late father Robert Kardashian, whom he lost to cancer in 2003.

He told People magazine: "I had a really close bond with my dad. I was only with him for 15 years. That's why I'm looking forward to having that long-term bond with my child and being funny and goofy like my dad was."

"He's definitely happy, looking down," he added. "I'm excited for this little journey now with my child and Chyna," he added. "I want to have a fun life."