In the second season premiere of Oprah's Master Class, the 32-year-old singer said her husband of nearly three years inspires her to live more openly, reported Us magazine.
"I really learned what everyone meant when they said 'You know when you know' when I met my husband. I never knew what that meant and it sounded to me like some weird kind of slogan," Keys said.
The couple wed on the French island of Corsica in July 2010, three months before Keys gave birth to their son, Egypt.
"He's such an incredibly, crazy, spontaneous, full of life person. He's just bubbling over with life. I've never met a person like him -- ever.
"Few of us are able to be that free to just follow our light and know that it's going to lead you where you're meant to go. So, he's definitely taught me a lot about freedom, and a lot about spontaneity and being open to life and how it's going to happen," said Keys.