A relationship serves as a reference point for yourself in the world of possible you-s. The good and the bad times a relationship endures create the contours of your being. The depth of those contours are correlated with the depth of the relationship.
While it is easy to live through the good times, the rough, tough and bad time are the defining factor for the depth a relationship might have. The quality of the tools for conflict resolution is crucial for this depth since unresolved conflicts result in the end of any relationship…sooner or later.