Various embodiments provide for dynamically and automatically managing activities of two parties (e.g., friends, business associates, family members) based on a change in relationship (e.g., no longer friends, break-up, divorce, no longer working together) between the two parties in a network (e.g., a social network implemented using a social networking website). In one specific example, mechanisms are provided for dynamically and automatically adjusting privacy control (e.g. removing, hiding, scraping, deleting, obscuring) of past activity data (e.g. social network wall posts, social network wall re-posts, pictures, forum posts, blog posts, blog comments, documents, files, videos, tags etc.) of the two parties upon detecting a change in relationship between the two parties in the social network.