A legal or binding agreement that describes a relationship between two or more entities, that takes into account every possible scenario or outcome, is extremely defined, articulate, diverse and all-encompassing, and provides clear consequences as a result of deviations from generally accepted guidelines, rules or methodologies.

Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)