"In that regard, you also need to put up a few extra defenses and not give everyone the benefit of the doubt." Some of Dark's innate cynicism crept back in and he meant it, "If everyone you know and trust is warning you against someone and not for surface-level faults, listening to them helps to avoid disaster. It may feel kinder to approach everyone without a care to how they may have treated others, but it can lead you somewhere you do not wish to be."
"But you're not alone," Daizi promised, putting her arms around him, "and you know as well as I do nothing would make Xander leave your side. He may not be hurt at all, but even if he is, he will not walk away from you. You're his brother, that means something. He just wants you to be safe, I'm sure."