Rob Kardashian hadn't been living his best life since 2013, but once he got to know Blac Chyna, he felt a little bit more hopeful about his future.
The couple spoke to People Magazine about their relationship, which became so intense and so public in such a short amount of time that it landed them their own reality series, Rob & Chyna.
"She got me through my darkest times," Kardashian revealed.
"I wasn't happy in my own skin. I missed out on so many things."
Kardashian's initial weight gain (he admitted to putting on 40 lbs on an episode of Kourtney & Kim Take Miami) came after he broke up with then-girlfriend Rita Ora in late 2012.
From that point until early this year, Kardashian continued to gain weight, battled depression and was rumored to be abusing drugs.
During the holidays last December, Kardashian was rushed the hospital and later diagnosed with diabetes.
Kardashian explained that he and Chyna had known each other before dating.
"She was someone I reached out to for advice. She would cook for me and we'd just talk," Kardashian said.
"She's surrounded me with a lot of positivity. From the moment we met, I knew I wanted to be more than friends."
Chyna, who would share their healthy meal preps and workouts on Snapchat, was there to lend support.
"I saw Rob was willing to better himself," she told People.
"I had never wanted to be tough. I never wanted to change him."
It worked, because now they are not only engaged, but expecting their first child together this fall.
"Chyna definitely motivates me," he said.
"Being with her got me over the insecurity of being out in public."
Though he didn't address recent reports that he's not comfortable filming again, Kardashian did admit that he's not 100% back to his old self...yet..
"There were definitely dark days for me, and I'm still not fully happy looking at myself in the mirror," he said.
"But I'm working towards that. And I'm happy."
Rob & Chyna premieres September 11th at 9 p.m. on E!