First off, I'd suggest several changes in your sentences:whom are you telling tales to ? you ? or me ?
to whom are you telling tales ? to you ? or to me ?
Oh, now I understand.The speaker have no clue to say if the other person believe in what he said or not.
The other person may believe in his arguments and so be telling tales to himself, or may be only trying to convince the speaker that he is thinking in what he said and so, telling tales to the speaker.
That's why I wrote you ? or me ? with two question marks, to insist on the pause in the speech.