"It has nothing to do with trust. You could be used. You don't think you could be forced or tricked? I've seen it happen with better man than either of us." Sirius had never been the most trusting person, but the years hadn't made him any more trusting. For obvious reasons, it was quite the opposite. "I believe that you wouldn't join up with the Dark Lord, but where are you going? And who could you lead back here?"