□nma□ycul□□□esandsoc□eties□□□cestisconsideredt□booand□sstric□lyforbi□den.Thei□eao□romanticorse□u□lr□□atio□s□□□s□□tw□ensi□lingsisme□□ithshock,disgust□andmo□al□utrage.Thetab □nmanyc□lturesan□□ociet□es,in□estis□□nsidere□ta□□oan□isstrictlyforb□dde□.T□eideaofro□a□tic□r□e□u□lr□latio□shipsbetweensib□□ngsism□tw□t□□h□ck,□□sg□st,a□dmoralo□trage.Thetab□□ Inmanycultu□□s□ndsocieties,□nce□□iscons□deredtab□oandisstr□ctlyfor□i□□en.Theideaofromanticor□e□ualrela□ionshi□sbe□we□nsiblingsismetwithshock,dis□□s□,andmor□l□utra□□□Thetab I□□any□ult□r□□ands□cieties,□ncest□sconsider□dtabooandiss□rictlyforb□d□e□.Theideao□romanticorsexualrel□t□onshipsbetweensib□ingsi□□□twithshock,dis□u□t□andmoral□utrage.Thetab Inman□culturesandsocieties,i□ce□tisconsidere□tabooandisstrictlyforb□dden.Theideaofromant□cors□□ual□elationshi□sbetwe□nsiblingsisme□wit□shock,di□gus□,a□d□oraloutrage.The□ab