He made it quite clear that she was to go alone with him, playfully mentioning his desire to be the only witness to her confusion when confronted by the "obsequious salesman and his baubles from the sea." If quite agreeable to her he would make an appointment with the jeweller for 3.30 and would call for her in person.
After that, he continued, the signing of a contract for life would not seem such a portentous undertaking, and they could go to the meeting with hearts as light as air.

It was a cheerful, even gay little missive, but she was not for an instant blind to the irony that lay between the lines.
Anne selected the pearls that he had chosen in advance of their visit to Tiffany's.

He did not tell her that he had instructed the jeweller to make up a string of pearls for her inspection, with the understanding that she was to choose for herself from an assortment of half-a-dozen beautiful offerings, no price to be mentioned.

He was quite sure that she would not even consider the cost.

He credited her with an honest scorn for sentimentality; she would make no effort to glorify him for an act that was so obviously a part of their unsentimental compact.