So now in the book, Rosemary is continuing to fall in love with Dick, but their love is hard because they have to continue to hide it from Nicole. In this passage Dick and Rosemary are parting for the night, but the strength of their relationship is very prevalent.
When he had tottered out Dick and Rosemary embraced fleetingly.There was a dust of Paris over both of them through which they scented each other: the rubber guard on Dick's fountain pen, the faintest odor of warmth from Rosemary's neck ans shoulders. For another half-minute Dick clung to the situation; Rosemary was first to return to reality.
I like how they snap into reality(in next paragraph). But what i really find unique about this paragraph is the words Fitzgerald uses to describe the setting such as the "dust" and the part about his "fountain pen"