Dr. Guralnik meets 4 new couples. Ping and Will navigate an open relationship. Molly wonders whether her marriage can withstand "scar tissue." India and Dale grapple with the arrival of a new baby. Cyn questions her monogamous life.
Ping traces her problems with Will to a recent trip. Cyn opens up about childhood trauma. India lashes out against feelings of judgment. Molly reveals the incidents that nearly broke her marriage.
Molly admits past betrayals that have pushed Josh away. Orna explores Yaya's lack of response to Cyn's provocations. Dale opens up about conflict with his father. Orna leads Ping and Will out of a stalemate.
Ping and Will disclose the roots of their dynamic. India faces a truth about herself. Molly begins to see Josh in a new light. A recent fight between Cyn and Yaya brings a moment of clarity.
Josh reveals a childhood experience that echoes his relationship with Molly. Cyn and Yaya's trip brings them closer. Orna helps Ping face her self-destructive instincts.
Yaya's uninhibitedness reawakens Cyn's interest. A burst of intimacy causes Molly to question how long this happy moment can last. Ping's newfound growth is met with skepticism by Will. A heated argument tests India and Dale's bond.
Cyn and Yaya share a surprising development. Orna and Dale investigate his aversion to India's anger. A minor squabble between Molly and Josh leads to an explosive revelation.
Orna confronts Will about his lack of engagement with Ping. Molly and Josh deal with the fallout from their previous session. A startling comment from Cyn threatens her connection to Yaya.
Ping and Will face many truths. India and Dale share revealing insights. Cyn and Yaya emerge from their recent setback with a new vitality. Josh confronts his fears and reaches a fresh understanding about his relationship with Molly.