Musician Blake Shelton has opened up about his romance with No Doubt frontwoman Gwen Stefani. 

During an interview on Late Night With Seth Meyers this week, the country music sensation joked that perhaps Stefani needs to get her eyes tested because he can't understand what she sees in him:

"I still can’t believe it. I think that she must have some vision problems. Maybe she needs help.”

He continued to gush about his girlfriend, adding: “I’ve always known ‘Hey Baby,’ I didn’t know she sang that freaking song. I’m like ‘Wow, that’s you? That’s you and we’ve kissed?’”

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Watch Shelton talking about Stefani below: