So, I had a shower thought this morning. We see in canon that some pieces of magic have a deeper complexity that is not always apparent. Case in point - Lily's sacrifice. Millions of words have been written about this, Lily wanted to trade her life for Harry's, Voldemort says nah, gets rekt. Obscure corner-case magic stuff that no one thinks about. Sacrifice is a powerful thing. Then, there's the unbreakable vow. Breaking the vow has a sever penalty, which is death. Breaking your word is a powerful thing, and this exemplifies that. There's a million sayings about not being able to trust a man's word. So, what if the Fidelius Charm operated on the same sort of idea? The act of trusting someone is a very powerful thing, trusting someone explicitly, even more so. Perhaps the magic only works at it's full potential when the person casting the spell, and the secret keeper aren't the people being protected by the spell, thus, the whole trusting someone thing. This really isn't an exploration into the beaten topic of "blah blah, why don't they just cast the Fidelius on themselves". So, instead, in fanon, what would the imbedded magical punishment be for someone breaking their trust with the Fidelius Charm. Voldemort likely would have died from the rebounded spell if it hadn't been for his horcruxes. Breaking the unbreakable vow allegedly kills you. Would the backlash from giving the secret away be death as well? This is ignoring any physical backlash, since obviously when people found out you spilled the secret, they'll go after you (Sirius). Or perhaps the person would be cursed in some fashion? I feel like it adds an interesting dynamic. Say that it's known that something bad will happen. Wormtail knows that revealing the secret will be very painful, perhaps even deadly for him, but he still tells voldemort, because death is less scary than what he'll do to you to try and extract the information, and what he'll do with your body after he kills you. Thoughts?