The Two Carnegies by Grant Allen — Read

That night the two Carnegies slept very little. They were both in love, very seriously in love; and anybody who has ever been in the same condition must have noticed that the symptoms, which may have been very moderate or undecided during the course of the evening, become rapidly more pronounced and violent as you lie awake in the solitude of your chamber through the night watches. But more than that, they had both begun to feel simultaneously the stab of jealousy. Each of them had been very much taken indeed by Isabel Walters; still, if they had seen no chance of a rival looming in the distance, they might have been content to wait a little, to see a little more of her, to make quite sure of their own affection before plunging headlong into a declaration. After all, it's very absurd to ask a girl to be your companion for life on the strength of an acquaintanceship which has extended over the time occupied by three dances in a single evening.

But then, thought each, there was the chance of Ernest's proposing to her, or of Harold's proposing to her, before I do. That idea made precipitancy positively imperative; and by the next morning each of the young men had fully made up his mind to take the first opportunity of asking Isabella Walters to be his wife.