As bad of an idea as it is to get on his bad side, that doesn't mean I am going to tell him every secret I have learned, especially those which I have vowed to keep secret.

[There is sharing information because they are working toward a similar goal and then there is sharing information that might put someone in danger. Guess which of those Diarmuid is not willing to do?]

Has he been told that he can activate his shard? I would be willing to teach him how if that would help appease him any.

[That seems like as good a place to start as any.]