Rob Kardashian and Blac Chyna covers for PEOPLE magazine; Speaks on how Blac saved him

Celebrities: Rob Kardashian and Blac Chyna covers the new issue of the PEOPLE magazine. The couple spoke on a wide rage of issues concerning their life during an interview with the PEOPLE. Rob and his expectant fiancée, Blac Chyna, open up about their impending arrival, his relationship with his sisters and dealing with his 100-lb. weight gain.

"She got me through my darkest times," Rob says of his the entrepreneur, model and mom-to-be. "I wasn't happy in my own skin. I missed out on so many things."

"I've been friends with Chyna for a long time," he says. "She was someone I reached out to for advice. She would cook for me and we'd just talk. She's surrounded me with a lot of positivity. From the moment we met, I knew I wanted to be more than friends."

Chyna, 28, said she wasn't out to change Rob but only give him support.

"I saw Rob was willing to better himself," she says. "I had never wanted to be tough. I never wanted to change him."

"Chyna definitely motivates me," says Kardashian. "Being with her got me over the insecurity of being out in public."

"We just want to live our lives the way we want to," he says. "There were definitely dark days for me, and I'm still not fully happy looking at myself in the mirror. But I'm working towards that. And I'm happy."