Brett and ernie have realized that they are becoming closer as a couple, but they still appreciate that they are separate individuals and have their own lives outside the relationship. this is realization is known as

This is realization is known as " Recalibration".

Recalibration is defined that it is to recalibrate something, which means to change the way you do or consider something. Like in the given scenario, Brett and Ernie lives in a different ways inside and outside their relationship.