"He's the first person I've met who understands my life -- the travel and the work and that real dedication and determination," Bindi said. "I think that's why I love him so much, because he gets my world."
In the new cover shoot, Bindi also models a range of age-appropriate outfits in her native landscape. Irwin gets her love of the outdoors from her mom, Terri, and late father.
Bindi was just 8 when her dad died, and she revealed that she developed anxiety soon after his death, fearing that she could lose her mom or younger brother too.
"It was really bad when I was younger, now I just have this sense that I want to protect them, so it's always 'be safe' and 'I love you,'" Bindi recalled.
"When your superhero dies, that's really scary," she admitted. "The strongest person has been taken away, so what about everyone else?"
The teenage wildlife preservationist credits DWTSwith helping her heal.
"It changed my life, because I was able to close those chapters that I'd never really been able to close before," she said. "It really gave me an opportunity to say, 'Okay, I can be at peace with it, and I'm okay.'"