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Although Keith and Nicole's relationship reads like a Hollywood love story, Oprah believes it's something more. "What I hear you saying is something even deeper because I think ... 'Having an open heart,' that is my definition of spirituality," she says.

For Oprah, spirituality means that when you have an open heart, you're open to receive all the abundance that the higher power—God and grace—has to offer to you.

"Absolutely," Keith says.