I don't think it was his wealth, accomplishments, or position that most attracted Polly, though these doubtless possessed a greater influence than she suspected.

It was that indescribable something which women are quick to see and feel in men who have been blessed with wise and good mothers.

This had an especial charm to Polly, for she soon found that this side of his character was not shown to every one.

With most girls, he was very like the other young men of his set, except perhaps in a certain grace of manner which was as natural to him as his respect for all womankind.

But with Fanny and Polly he showed the domestic traits and virtues which are more engaging to womanly women than any amount of cool intellect or worldly wisdom.
Polly had seen a good deal of him during her visits at the Shaws', where he was intimate, owing to the friendship between Madam and his mother; but she had never thought of him as a possible lover for either Fanny or herself because he was six or eight years older than they, and still sometimes assumed the part of a venerable mentor, as in the early days.
Lately this had changed, especially towards Polly, and it flattered her more than she would confess even to herself.