"Go ahead and tell me truth" the truth that no one had taken the initiative to tell him, perharps because they weren't connected to he and Hazel like Gilles was. Or perharps Gilles had just not realized that Hazel had changed and she was no longer that cute obedient little girl he had known before travelling abraod.
Whether it was indeed the truth or not he still wanted to hear it from his best friend's mouth. That so called truth that isn't supposed to be a sort of comfort for him but reality finally hitting him, but he didn't believe. Or rather, he didn't want to believe it, he didn't want to believe that he had been the one in the wrong all this while.
Smiling in amusement, Gilles seems to have been expecting this same answer from Ethan, though the guy seemed to be bad in his judgment
