“I’m wearing my Rosie T-shirt,” Bruno Mars says with his signature suave smile as Rosé laughs in disbelief. She, too, is wearing artist merchandise — only hers is a Bruno Mars T-shirt. “We weren’t planning this,” attests Bruno, to which Rosé adds with a playful sigh, “This is our life.”

Even over Zoom today from across the world, with Rosé in Seoul and Mars in Los Angeles, there’s a comfortable candor between the two collaborators and close friends — a relationship that Rosé, 28, likens to siblings, with Mars, 40, acting as a music industry mentor and older-brother figure to her. They first met at an Atlantic-arranged meeting at Mars’ L.A. studio in the summer of 2024, as the Blackpink superstar was preparing her solo debut album, and Mars remembers how she was immediately “hustling infor

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