Singer Michael Jackson isn’t commenting on reports that Grace Rwarmba, the nanny to his three children, wants to marry him. But according to Frank Dileo, the former manager who’s again working with recently-acquited Jacko, Grace is in love with the troubled star and his kids call her “mom.” Sources say lonely Michael would be making a “huge mistake” if he took a third wife in an attempt “to clean up the still lingering image of him as a child molester.”