Disney Channel may have boosted Demi Lovato to stardom, but with those days behind her, some of the singer's Disney-born friendships have also fizzled.Lovato discussed her Disney era in Harper's Bazaar's May cover story, which arrived Tuesday (April 14), and revealed who is still in her life -- and who is not."I talk to Miley [Cyrus]," she said (the two recently chatted on Cyrus' new Instagram Live talk show Bright Minded). "She's awesome, and I love her to death and always will, always have.