He was only for the joyous days, the days of courage, when she could share with him all the good things he brought with his passion for novelty and change. But he knew nothing of her; he was no companion to her sadness. He could never imagine anyone else's mood, only his own. His own were so immense and loud, they filled his world and deafened him to all others. He was not concerned to know whether she could live or breathe within the dark caverns of his whale-like being, within the whale belly of his ego.
The passage highlights a relationship defined by superficial joy and a lack of emotional depth. The protagonist enjoys the bright, spirited moments but struggles to connect with their partner's sorrow. This indicates a one-sided connection where the partner is oblivious to her deeper feelings, suggesting an imbalance in emotional understanding. The joyous days they share only scratch the surface of a more complicated reality.
Furthermore, the description of the partner's overwhelming self-centeredness paints a picture of someone who is disconnected from the emotional needs of others. His inability to comprehend different moods illustrates a fundamental limitation in their bond, as he remains trapped within his own overwhelming feelings, neglecting the nuances of her experiences. This creates a barrier that prevents genuine companionship, leaving her isolated amid his self-absorption.