Disclaimer: Naruto is not mine.
The first time Itachi touched him, Naruto trembled, for he had never felt such a cold and dispassionate hand before. But Naruto let Itachi touch him because Itachi was graceful and quiet and uncomplicated.
The last time Itachi touched him, Naruto did not tremble, for he had grown accustom to the way Itachi's fingers painted pictures of the numbered dead across his bare skin. And Naruto let Itachi touch him because dead men are powerless in the end.
And as with every relationship, only a series of raw inhalations and fumbling fingers and fierce exhalations separated its crescendo and diminuendo.