It seems Miley Cyrus and Demi Lovato may not be good friends like we thought, after Demi gave Miley the cold shoulder on Twitter. Actually, it was more than a cold shoulder - Demi totally froze her out, and showed the whole Twitterverse when she did it!

Miley Tweeted this picture of her and Demi @ Demi on Twitter with the note:

"Now this is what true friendship looks like. None of that hollywood crap. @ddlovato I miss you =]"

Unfortunately for Miley, Demi’s response wasn’t so warm! She wrote back:

"Yeah...It's just kind of hard to miss somebody that I don't know anymore."

Ouch! Miley got cut down! And it’s even worse that the hundreds of thousands of people following Demi and Miley saw the icy exchange!