The 23-year-old model appears in a variety of swimwear for the magazine shoot and accompanying chat, where she reflected on the difference in her other half when they reunited several years ago after splitting as teenagers.
"I think I had grown up a lot, too," Hailey, who married Justin in September, 2018, said. "He was somebody I'd always cared about so deeply and loved very deeply. Obviously, it took work and getting past things between the two of us, but it was all very worth it."
"He's an incredible, amazing man and such a good partner to go through life with. There is no one else I would have ever wanted to spend my life with except him. So, I'm lucky."
But things haven't been entirely smooth for the pair since they tied the knot. Justin recently revealed that he's been suffered from Lyme disease and mono, and Hailey found it difficult seeing her husband go through such a difficult time with his health.
"When we first got married, we were just figuring out our life together. I felt like putting a wedding in the middle of all of that would be really hectic and stressful," she explained "He was really sick. He has Lyme disease, and he was dealing with a bunch of medical stuff. We didn't have a diagnosis."
"And it was hard because everybody from the outside was being super mean and judgmental, saying he looked like he was on drugs, saying how unhealthy he looked, when in truth, he was not healthy and we didn't know why."
Hailey continued: "It was months of me being a new wife trying to help him figure out what was wrong and what was going on. Now he's perfectly healthy. But going through that and then trying to be like, 'So where does our wedding fit into this?' didn't feel like the vibe at all."