Most people would seek revenge if they found out their partner had been unfaithful, but what would you do if your sibling was involved? It's painful to even think about.
One woman has admitted to getting sweet revenge on her own sister after discovering the sibling had been sleeping with her fiancé - with "no regrets".
Her now ex-partner continued his relationship with the sister after the expose, and they are now expecting a child together. After finding herself at the cheating couple's gender reveal unintentionally, the heartbroken woman decided to spoil the entire day "out of spite".
