...of a man changed

The appearance of The Doubtful Asphodel in the spring of 1935 coincided with Sebastian's last attempt to see Nina. When he was told by one of her sleek-haired young ruffians that she wished to be rid of him for ever, he returned to London and stayed there a couple of months, making a pitiful effort to deceive solitude by appearing in public as much as he could. A thin, mournful, and silent figure, he would be seen in this place or that, wearing a scarf round his neck even in the warmest dining-room, exasperating hostesses with his absent-mindedness and his gentle refusal to be drawn out, wandering away in the middle of a party, or being discovered in the nursery, engrossed in a jig-saw puzzle. One day near Charing Cross, Helen Pratt saw Clare into a bookshop, and a few seconds later, as she was continuing her way, she ran into Sebastian. He coloured slightly as he shook hands with Miss Pratt, and then accompanied her to the underground station. She was thankful he had not appeared a minute earlier, and still more thankful when he did not trouble to allude to the past. He told her instead an elaborate story about a couple of men who had attempted to swindle him at a game of poker the night before.

[The Real Life Of Sebastian Knight, Nabokov, V.]