'Happy' hitmaker Pharrell Williams has revealed that Gwen Stefani's romance with fellow 'The Voice' coach Blake Shelton is nothing short of a miracle and he's so excited to see them both so happy. 

During a chat with U.S. breakfast show Today, Pharrell explained that it's wonderful to know they've found each other because he knows how stressful their previous break-ups have been:

"It is popping off! And it's so beautiful because being there, I watched the both of them go through a lot (with their divorces), and you hate to see your friends go through something so heavy. It's kinda (crazy), it's like a miracle, man, just watching that (their new romance develop)."

He went onto add that he had never noticed their chemistry before, so news of their relationship came as something of a surprise: "I had no idea! Then Blake sends me a text message (notifying me) and I'm like, 'Woah!' Never in a million years! You'd never guess it!"

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