This Side of Paradise by F. Scott Fitzgerald

The Knickerbocker Bar, beamed upon by Maxfield Parrish's jovial, colorful "Old King Cole," was well crowded. Amory stopped in the entrance and looked at his wrist-watch; he wanted particularly to know the time, for something in his mind that catalogued and classified liked to chip things off cleanly. Later it would satisfy him in a vague way to be able to think "that thing ended at exactly twenty minutes after eight on Thursday, June 10, 1919. " This was allowing for the walk from her house -- a walk concerning which he had afterward not the faintest recollection.

He was in rather grotesque condition: two days of worry and nervousness, of sleepless nights, of untouched meals, culminating in the emotional crisis and Rosalind's abrupt decision -- the strain of it had drugged the foreground of his mind into a merciful coma. As he fumbled clumsily with the olives at the free-lunch table, a man approached and spoke to him, and the olives dropped from his nervous hands.