So as not to be recognized, Vronsky uses another man’s hired carriage instead of his own to meet Anna. He is joyful and eager to see her. Anna informs Vronsky that she has told Karenin everything. Vronsky immediately believes that a duel is inevitable, but Anna misinterprets his stern expression and believes that she has offended him.
Vronsky and Anna don’t communicate well silently, which, in the novel, is a sign that the relationship lacks a fundamental core, as Tolstoy always trusts nonverbal communication over words.
Vronsky says that Anna must divorce Karenin. Anna says that this is impossible because of her son. Anna and Vronsky both feel wretched and at fault for the whole affair.
Vronsky doesn’t care about the social implications of a divorce for Anna: he only thinks about how the relationship will work best for his own needs.