A Damsel in Distress by P. G. Wodehouse

At the moment of Lord Marshmoreton's arrival, George was reading a letter from Billie Dore, which had come by that morning's post. It dealt mainly with the vicissitudes experienced by Miss Dore's friend, Miss Sinclair, in her relations with the man Spenser Gray. Spenser Gray, it seemed, had been behaving oddly. Ardent towards Miss Sinclair almost to an embarrassing point in the early stages of their acquaintance, he had suddenly cooled; at a recent lunch had behaved with a strange aloofness; and now, at this writing, had vanished altogether, leaving nothing behind him but an abrupt note to the effect that he had been compelled to go abroad and that, much as it was to be regretted, he and she would probably never meet again.

"And if," wrote Miss Dore, justifiably annoyed, "after saying all those things to the poor kid and telling her she was the only thing in sight, he thinks he can just slide off with a ‘Goodbye! Good luck! and God bless you! ' he's got another guess coming. And that's not all. He hasn't gone abroad! I saw him in Piccadilly this afternoon. He saw me, too, and what do you think he did? Ducked down a side-street, if you please. He must have run like a rabbit, at that, because, when I got there, he was nowhere to be seen. I tell you, George, there's something funny about all this. "