He was not willing to spoil sport.

About Rebecca and Jos he did not care a fig.

But he thought Amelia worthy even of the brilliant George Osborne, and as he saw that good-looking couple threading the walks to the girl's delight and wonder, he watched her artless happiness with a sort of fatherly pleasure.

Perhaps he felt that he would have liked to have something on his own arm besides a shawl (the people laughed at seeing the gawky young officer carrying this female burthen); but William Dobbin was very little addicted to selfish calculation at all; and so long as his friend was enjoying himself, how should he be discontented?
And the truth is, that of all the delights of the Gardens; of the hundred thousand extra lamps, which were always lighted; the fiddlers in cocked hats, who played ravishing melodies under the gilded cockle-shell in the midst of the gardens; the singers, both of comic and sentimental ballads, who charmed the ears there; the country dances, formed by bouncing cockneys and cockneyesses, and executed amidst jumping, thumping and laughter; the signal which announced that Madame Saqui was about to mount skyward on a slack-rope ascending to the stars; the hermit that always sat in the illuminated hermitage; the dark walks, so favourable to the interviews of young lovers; the pots of stout handed about by the people in the shabby old liveries; and the twinkling boxes, in which the happy feasters made-believe to eat slices of almost invisible ham--of all these things, and of the gentle Simpson, that kind smiling idiot, who, I daresay, presided even then over the place--Captain William Dobbin did not take the slightest notice.
He carried about Amelia's white cashmere shawl, and having attended under the gilt cockle-shell, while Mrs.Salmon performed the Battle of Borodino (a savage cantata against the Corsican upstart, who had lately met with his Russian reverses)--Mr.Dobbin tried to hum it as he walked away, and found he was humming--the tune which Amelia Sedley sang on the stairs, as she came down to dinner.
He burst out laughing at himself; for the truth is, he could sing no better than an owl.
It is to be understood, as a matter of course, that our young people, being in parties of two and two, made the most solemn promises to keep together during the evening, and separated in ten minutes afterwards.
Parties at Vauxhall always did separate, but 'twas only to meet again at supper-time, when they could talk of their mutual adventures in the interval.
What were the adventures of Mr.Osborne and Miss Amelia?
That is a secret.

But be sure of this--they were perfectly happy, and correct in their behaviour; and as they had been in the habit of being together any time these fifteen years, their tete-a-tete offered no particular novelty.
But when Miss Rebecca Sharp and her stout companion lost themselves in a solitary walk, in which there were not above five score more of couples similarly straying, they both felt that the situation was extremely tender and critical, and now or never was the moment Miss Sharp thought, to provoke that declaration which was trembling on the timid lips of Mr.Sedley.