Bethenny begins planning a tailgate-chic BBQ birthday party to take place at her Hamptons home. Meanwhile, on the Upper East Side, Luann and Sonja bond over sparkling rosé and their desire to settle down. Dorinda visits Ramona's revamped post-Mario apartment and invites her to her lingerie party. Carole and Bethenny meet up to discuss Carole's relationship with Adam, as well as her ongoing drama with Luann.  On the night of Dorinda's lingerie party, Bethenny confronts Dorinda about overselling John to the ladies, which opens the door for Ramona to reveal a shocking revelation surrounding John and Dorinda.