This was lovely. I HATE snakes -well except for this tattoo- but I love Parselmouth smut. I love this one's snark to. If you revisit this? You have to. You realize you left it open. We can interpret all we want but you could always write a story telling Harry excatly how their symptomatic relationship works/what it is. How he came to get the magical tattoo with a mind of its own, and yet it seems it dosen't have a mind of its own since its name is Severus after all... oh the possibilities.