She's the sultry singer and he's the sexy basketball superstar who has made millions on endorsements. Together, Grant Hill and wife, Tamia, have lived a dream life -- until their world was ripped apart by multiple sclerosis.

And now for the first time since Tamia’s devastating diagnosis nearly two years ago, the couple has found the courage to speak out, and they’re talking only to "Extra."

"I mean literally, I went from being physically active to not being able to get out of bed," Tamia recalled. "I cried for maybe 20 or 25 minutes."

"It took time for her, for both of us, for everyone involved, to accept it," Grant added.

Tamia, who is 30, joins other celebrities like Richard Pryor, Teri Garr, Annette Funicello and Montel Williams in taking their struggles public to help raise awareness for the National MS Society and the crippling disease that attacks the nervous system.

"I just felt it was important to get it out there and let people know it's not a sign of weakness," Tamia said. "You have good days and bad days."

But the Hills aren't letting MS slow them down. Grant's still a premiere player in the NBA, whose main goal now is helping his wife manage MS through medication, diet and exercise. And remarkably, Tamia is raising a 3-year-old daughter and still touring and recording new material!

"It wasn’t a death sentence," Tamia insisted.

"She's a great mother, she's active, she's entertaining," Grant said. "Hopefully she can be encouraging and inspiring to others."

"We're just pushing forward and hoping that in the next ten years there will be a cure," Tamia added.