What does Ethan remember after Mattie has retired to her room?

After Mattie has retired to her room, Ethan reflects on the deep emotional connection he feels with her. He recalls their shared moments and the warmth of their relationship, contrasting it with the isolation of his own life. This introspection intensifies his longing for a future together, highlighting his frustration and the barriers that keep them apart. Ultimately, he is left with a profound sense of yearning and melancholy.