"That's a good question, Potter. I don't know why the Dark Lord didn't trust me in that regard," I muse, tapping my chin thoughtfully. "Maybe he would have confided in me at some point and I forestalled him by fleeing? After all, he waited years before telling me about the Horcruxes. Perhaps this secretiveness was another precautionary move on his part after he told me that one day I would have to sacrifice myself? Or maybe he just didn't think it was necessary for me to know where he was since I was always available to him thanks to the Dark Mark? I can only guess. But to get back to the point, the person I'm talking about won't officially know either."