I□man□cul□uresands□ci□ti□s,i□c□st□s□onside□edtabooandisstrictlyfo□bidd□n.T□e□deao□romanticors□xualr□lations□ip□bet□een□i□lingsis□etwithshock,□i□□us□,andm□r□loutra□e□Thetab □n□anycult□resandsocieties□inc□□tisconsideredtabooandi□st□□c□lyforbidden□Theideaofromanti□orsexualrela□□□n□hips□etweensi□l□ngsismetwith□hock,disgust□□n□m□raloutr□ge.Th□□ab Inma□yculturesandsoc□eties,ince□□□□co□sideredta□ooan□is□tr□□tlyfo□b□d□en.Theideaofromantic□r□ex□alrelations□ipsbe□weensiblingsismetwithshock,disgust,and□□r□loutrage.Thetab □n□anycu□□uresan□socie□ies,incestisconsideredtabo□a□dis□t□ictlyfo□bi□de□.T□eideaofromanticorsexualrelationships□etweens□bl□n□sismetwithsh□□k,disgust,andmor□loutrage□Thetab Inman□culturesand□ocieties,incestis□onsi□eredtabooandisstrictly□orbidd□n□Th□□dea□froman□icorsex□alre□a□ionshipsbetweensi□lin□sismetwiths□□ck□disgust,□n□mo□a□out□□ge.□□etab