What did Obito mean when he called Sasuke "fellow of the traitor"

[VJ87G]

What he means that Sasuke betrays him, and Obito doesn't like traitors. But Sasuke knows that Obito betrays the Uchiha.

 

[Nahk]

becasue Sasuke is "Akatsuki" memeber. and he also call Konan a traitor too.