She 'confessed to' a love of trashy romance novels. [=she admitted that she loves trashy romance novels]
I must 'confess' [=I am a little embarrassed to say] that I know nothing about computers.
She 'confessed to' having lied to me in the past. [=she told me that she lied to me]
(..) Seven septons as it was in all trials before the Targaryens. Will you be one of them? I will. If one or both of them were to confess before the trial... Then they will be shown the Mother's mercy. And what does the Mother's mercy entail? (..)2015 TvShow: Game of Thrones Title: The Gift Season: 5 Episode 7