Adam Levine may pick on Blake Shelton from time to time, but underneath that feud is a strong bromance. The singer stopped by Late Night With Seth Meyers on Wednesday night and talked about what it's really like filming season nine of The Voice with Blake. "It's a blast," Adam gushed. "We mess around with each other so much and people actually think it's real, which is funny. We're like best friends." See what else he had to say in the video above, and then watch the coaches take on a classic Britney Spears hit.
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