Atlantic RecordsIt's no secret that fashion, beauty and fitness guru Keyshia Ka'Oir has held it down for her husband Gucci Mane for years. In the new single "Mrs. Davis" the Atlanta rapper pens a sweet love letter to his partner, thanking his lady for her love and loyalty over the course of more than a decade. In the chorus of the song, Gucci references Ka'Oir's sacrifice throughout the earlier years of their relationship. He raps, "I was at my worst, so you deserve my best / I treat you like a queen, 'cause you deserve the best / Said I'...