Was It All Just A Facade?

-SPOILERS FOR CHAPTER 13-
All Noctis cared about was finding his friends. Gladio, Ignis, and Prompto. All he wanted was to keep them all safe. But he hesitates for the slightest second as words slip from the intercom system.
"The most fascinating tidbit about your dear Prompto....Turns out he's not empty either. He's got quite the "skeleton" in his closet."
'He's lying. Prompto would never hide something from them, right?'