The book publishes parts of the notes that do not betray confidences.
Times, Sunday Times
That doesn't mean betraying confidences, or encouraging talks of splits.
Times, Sunday Times
He accused the writer of betraying confidences.
Times, Sunday Times
The result was compelling, but she was accused of betraying confidences.
Times, Sunday Times
And the fans deserve to know too without betraying confidences within the camp.
The Sun