When the couple arrives on their wedding day, their "easy assurance" shocks everybody except Mrs. Bennet. They don't seem to think they've done anything wrong.
Lydia is anxious to see everybody she knows to let them know she is married. She seems to have little sense that she should be ashamed.
Wickham's affection for Lydia is not as great as hers for him – just as Elizabeth suspected.
Lydia lets it slip that Mr. Darcy was at her wedding. Oops, she admits, she wasn't supposed to have said anything at all but the damage is done now….
Elizabeth says she won't pressure Lydia for more information. Still, burning with curiosity, she dashes off a note to her aunt asking for an explanation.