Demi Lovato's friends are concerned about the singer

Demi Lovato's friends are reportedly worried after the troubled singer has began isolating everyone in her life and firing her team members.

A source close to Demi says she "fired everyone around her" and "got rid of friends" in a drastic measure to save herself and maintain sobriety.

But her relationship with designer Henri Levy is giving them more cause for concern, "It just has shown everyone that she simply can’t be alone. It’s like she doesn’t know how.”

The rehabbed star is now living in an apartment in the San Fernando Valley after putting the home she overdosed in up for sale.