#redditstories #askreddit #aita #siblingbetrayal #relationshipdrama #familyconflict #emotionalwounds #favoritismexposed Imagine being replaced in a major life moment—not by chance, but by your own sibling’s choice. When one Redditor’s former partner is asked to step in for them by the “favorite” sibling, buried family tensions explode. Was it an innocent request—or a calculated act of betrayal rooted in favoritism? redditstories,askreddit,reddit,aita,tifu,siblingbetrayal,favoritismexposed,relationshipdrama,familyconflict,emotionalwounds,awkwardsubstitute,shockingfamilymoment,jealousysiblings,redditfamilydrama,conflictedloyalty,replacedbyex,familydynamics,redditconfession,loyaltytested,heartbreakingswap