Aaron knows better than to keep doing this. He knows - Robert’s the devil, dressed in blue.
He goes over the list: Katie, Andy, shooting Paddy, Rebecca, the endless lies. More he’s forgotten. More that he still doesn’t know. How much can Robert change? How much does he want to?
Aaron knows all this. He remembers Robert standing over him, gun pointed, having tied Aaron to a radiator. Crying because he couldn’t make himself shoot.
It has always been such a mess.
All Aaron knows is that there was a secret he could never tell, until he told Robert.