Even the biggest pop stars can have a brain fart! Justin Bieber delivered quite the surprise Saturday night in Miami when he joined Ariana Grande on her Honeymoon Tour to perform a duet of “Love Me Harder.” As he sang the parts originally performed by The Weeknd, Bieber accidently messed up a few of the lyrics because he didn’t remember them completely. He told Grande while performing inside the American Airlines arena, “So I feel bad, I forgot the words Ariana,I’ve been trying to memorize them backstage for like an hour!”
