Arrowsmith by Sinclair Lewis

While Martin developed in a jagged way from the boy of Wheatsylvania to mature man, his relations to Leora developed from loyal boy-and-girl adventurousness to lasting solidity. They had that understanding of each other known only to married people, a few married people, wherein for all their differences they were as much indissoluble parts of a whole as are the eye and hand. Their identification did not mean that they dwelt always in rosy bliss. Because he was so intimately fond of her and so sure of her, because anger and eager hot injustices are but ways of expressing trust, Martin was irritated by her and querulous with her as he would not have endured being with any other woman, any charming Orchid.

He stalked out now and then after a quarrel, disdaining to answer her, and for hours he left her alone, enjoying the knowledge that he was hurting her, that she was alone, waiting, perhaps weeping. Because he loved her and also was fond of her, he was annoyed when she was less sleek, less suave, than the women he encountered at Angus Duer's.