Relationships follow geometric formulae
Strangers are strictly outside our mental perimeter eg Perimeter of Square=4a
Later strangers become known acceptable individual to be in our area of comfort zone eg Area of Square=Sqr(a)
Close relationships transforms 2D bond into 3D volume giving depth to relationship eg Volume of Cube=Cube(a)
FYI Cube is 3D of Square
Daily obligations creates surface tension eg Surface Area of Cube=6*Sqr(a)
We are constantly fitting people into one of the formulae to categorize our relationship based on geometry with that person. Savvy!