Two laws of a relationship

Two Motion Laws of Relationships

A relationship is a complex entity. It is focused on growth because that is the essence of one. To either grow as people together, and/or start a life together and proceed down its path. Without such growth it seems to be a simple co-occupation of time and space to avoid loneliness. But I've come up with two laws that seem to kill a relationship

Law One: Backward Movement is all but impossible.
Just like a plastic zip-tie, relationships can move forward without much impedance. For example, taking the next step will not cause much stress and it's very easy for most people to move forward quickly. (some people will have backward movement to another's forward movement - eg. girl wants to live together, guy wants to drag his feet; in this situation there is a serious problem). However, once those steps are reached and you are at a certain level in the relationship - it is almost impossible to go backward. For example, to go from living together to just dating; or dating to just friends - seems to be extremely difficult and usually the entire relationship breaks and needs to just be cut; like the plastic tie.

Law Two: The Law of Stagnation
When two people get to a certain level and there is no forward progress, stagnation has occurred. Stagnation of any body causes it to decompose; instead movement must always be taking place. Hopefully forward movement, but some action must occur to avoid this. It is interesting that it doesn't matter about the timing of things either - rushing and jumping into a relationship and talking about living together within a month instead of a year or two will still cause the same amount of stagnation as soon as that point of motion-stillness has occurred. Granted, the rate of decomposition can also be slow or fast, but in all the same - decomposition will occur when things stop moving.