Prince couldn't answer. He's alert about the voice recognition, and something might slip off his mouth that'll make Bryce angry. Aria will repeat it, and it'll cause a spark inside their plan. It will lead to any conflicting emotions that Bryce and Prince can recall.
There's no due in their execution, but their time was running out. What if one day, someone got to state where Aria De Leon is residing, and Prince had to receive his punishment at the same time? It must be one of the headaches that everyone will suffer from.
With Prince and Aria getting along to raise the bars and finally fit the missing pieces in a puzzle, Bryce was there to listen to Aria's words every moment because he longed for her. Not only did Prince had to develop a crucial point for them to overturn Aria's killing, but he's giving a bridge to let Bryce know what happen to Aria after he cut her loose.
He said it's important, but today, he must have realized it's insignificant.
