Demi Lovato, who just launched her new single and music video 'I Love Me', has called singer Ariana Grande her 'Good Friend'. Both singers seem to have a lot in common. They have been quite vocal about their friendship in public and reports also reveal that Lovato recently hired Grande's manager, Scooter Braun. According to reports, despite attending the same events over the years, Lovato and Grande haven't been seen together many times. Both were snapped together only in 2015 at the American Music Awards.