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]
(..) AIright, aIright, unfreeze. You're under arrest. It wasn't me. It was the one-armed man. AIright, I confess. I did it, you hear? And I'm gIad, gIad, I teII you! What are they going to do to me, Sarge? What are they going to do? Sorry, son, that's not my department. Search him. (..)1994 The Mask