Relationship.

world-
The one aspect of the relationship is two different people with two different world. The worse way to handle it is to becomes disrespectful, or coming in between the primary goals of each other. Keeping disagreement inside, The right way to do it is to have debate with each other, know each other worlds intimately, support each other in their primary goals.

I
The other aspect is to help each other to become better in terms of giving constructive feedbacks, never dumping ones garbage on others. Never passing judgments on other. Not doing things to please others. You can build strong respect and fondness by your actions, to be respected and adorable you have to be respectable.

culture
Culture of giving more than taking, safety, shared journey, debate and disagreements. Spending time together once a week, taking course together.