if you're non-sharing or selective sharing with any of my f/os, i will block you. i completely understand if within your boundaries you would prefer not to interact with people who interact with me because of this, but i ask you to please respect the distance i will put between us.
this being said, while i do understand that selective sharing doesn't inherently mean non-sharing, personally i don't appreciate the feeling of having to walk on eggshells around people just in the off chance i upset them by expressing my own happiness and appreciation for a character.
as previously stated, i will never unfollow someone for being a double of one of my other mutuals favs, if you're uncomfortable with that it's better not to interact.