Why is it that most of our acquaintances never turn into friendships? Along the same lines, why do most of our friendships tend to fade over time? What we're getting at here is Desire.
Desire is essentially the "want" for the relationship. The emotional benefits that justify your efforts to create a new relationship or support your choice to spend time with an existing one. Without Desire, friendships and relationships fade away or simply never form.
So what creates Desire and why can it be so fleeting?