Relationship dynamics....

When did the dynamics of a relationship change so dramatically? Was there a memo passed out? Was there a meeting or a nationally address on this subject? Was there a facebook event that I just was not invited to? When did having partner become more like a mobile phone plan? When did being with someone meant you have to be with them for a certain amount of time, and if you want out, you have to pay the massive exit fees. Also when did relationships follow a progression chart. For example my partner and I have been together for more than a year. To her this means it's long enough for us to move in together and start planning marriage. When did relationship start following a procedure. So my question is who here follows a proccedure type relationship (certain length of times means certain things) or who just lets nature take it's course?