Ego and Id
He preferred reality and she preferred fantasy. He preferred relationships with many without getting close. She preferred relationships with strangers and masses, both not getting close to either or making much time in their lives for them. Matters upset him that did not upset her. He was very tidy to the point of OC disease, she cleaned at her pace. Matters upset her that did not upset him. Yet they met in the middle on some points, yet he could not live without her and she him.