"No, I never knew a love like this / Now I'm picking purple irises." Later, Stefani asks, "And do you still think I'm pretty? / And are you happy?" Shelton, 47, goes solo in his heartwarming response.

"But if someone comes along and tries to / Love you like I do / Don't know what I'd do / Don't want to lose you," she sings, later adding: "No, I never knew a love like this. Now we're picking ...