Keep your distance!
This is the most important rule from which all the others flow. When a man and a woman enter into a new relationship, they are an unexplored territory for each other. They re-open each other and rejoice at every step they take to meet them. Moreover, in the long run they tend to become one indivisible whole - this is often considered the embodiment of the ideal of love relationships.
But with each step taken towards rapprochement, the relationship leaves ease and novelty. At first, it is exchanged for a sweet opportunity to fully open up to each other and it seems a fair exchange. In love, people specifically look for this opportunity to open - so that the partner will recognize and accept you with all the guts. They can not reconcile themselves with themselves from within, so they want someone to reconcile with them from the outside.
Already at this stage, many relationships begin to fall apart, because everyone wants to be loved, but very few people know how to love. It is impossible to accept another person as he is, if you can not accept yourself in all your properties and manifestations. But usually nobody thinks about this, and the rapprochement continues.