Why Michael Phelps won't stay retired, according to his fiancee
"I look at it a few different ways. I don't see him coming back because he went out exactly how he wanted to go out, and he's happy, and he did what he wanted to do," she told Cosmo. "He wasn't forced into it. From that standpoint, I don't see him going back."
"Then again, you never know. Maybe he misses it so much and maybe Boomer convinces him that he has to go back so Boomer can remember it," Johnson said.
Plus, there's always the addition of a new member of their family to consider down the line.
"[Maybe] We'll have somebody else who's like, 'Why am I not in those pictures?' Maybe that will push Michael enough to go back," she theorized to Cosmo.
And so, while Phelps is currently adamant that he won't be competing in Tokyo, there's still a glimmer of hope that we'll get to witness him competing once again.
Of course, Phelps' teammate Ryan Lochte has already predicted that he'll be back in the water in no time.
"I guarantee he will be there," Lochte told NBC. "I think so, I really think so. So Michael, I'll see you in Tokyo."
Check out Johnson's full interview - where she discusses everything from her wedding plans to Lochte's scandal - here.