We're totes gonna miss their adorable, sassy relationship!
We guess Dems couldn't stay at X Factor forever and Simon Cowell knew that she would depart for greener pastures!
"I always knew she wasn't coming back because she's touring, so I knew that."
Ahhh, sad day!
We hope Demicorn will at least be able to return as a guest judge or guest mentor or something!
If Simon decides to bring Miley Cyrus aboard, the two Disney pals could always work something out!