Quick question, no need for details, but is it still incest if

>>18591661
Your fetish is only interesting to you.

i think most would agree that it is socially.

Only technically. It'll still make family gatherings pretty awkward if they find out.

Yes socially, like the other anon said.
No because you're not related by blood.

Take your pick, and just fuck your sister if she wants to fuck you but don't let people find out.

>>18591661
Of course not. Anon, are you retarded?

>>18591661
Biologically, no.
Psychologically, yes

People who have been brought up as brother and sister relate to each other as brother and sister, and face the same psychological confusion and potential trauma as if they were blood-related.