The former model has long suffered from an autoimmune disease similar to lupus, a battle Thomas wrote about it in his 2009 hit "Her Diamonds." Her fight against the debilitating illness also inspired much of Thomas' latest solo record, The Great Unknown.
But just as she was turning a corner with her health, the couple were devastated when an MRI revealed a lesion on the base of her brain last year.
The couple persevered through the grueling period, admirably turning some of their darkest days into cherished times. Thomas recalls passing hours in Chicago by setting out to have fun with his wife, who co-manages his career and runs their Sidewalk Angels Foundation, which helps animal rescue groups.
While guitarist Kyle Cook announced his departure from the group in April (citing a breakdown of communication and conflict over touring plans), Thomas is optimistic the band will reunite for a YOSLY anniversary tour.
Road life these days is a stark contrast to Thomas' early days in music, during which he "used that rock star card at every place that accepted it," reveling in booze, drugs and partying, and getting into bad relationships to fuel his songwriting.
"He's been sending me pictures of his dorm and sent me his address so I can send him money!" he says. "He's a very cool kid, and it's a great feeling when your son gets up and plays guitar with you onstage. And then you're on the bus hanging with friends and he grabs his iPod and starts playing music that blows you away and makes you and all your friends go, 'Shit, that's good!'"