Season 4 opens with celebrity couples arriving to therapy. Included: One of the women is stood up by her boyfriend. Couples include Jon Gosselin and Liz Jannetta; Taylor Armstrong and John Bluher; and Whitney Mixter and Sada Bettencourt.
The first group therapy session features a discussion about dark moments in past relationships. Also: Farrah has a revealing session.
Taylor is called out for her rude behavior. Elsewhere, offensive comments cause Kelsey to storm out of a session, and Jon Gosselin and his girlfriend arrive.
Farrah makes a disclosure about the reason she has trouble connecting with people. Elsewhere, Sada flirts with Ghost, upsetting Whitney; and Jon is caught in a compromising position.
The couples' sex lives are addressed in group therapy. Also: Sada's upbringing comes into play; and Ghost reveals news to Kelsey.
Dramas surround Kelsey, Ghost and Latrice. Also: The couples participate in a compatibility test.
The couples discuss a past trauma and how it plays a part in their current relationships.
Sada has a session with her father. Elsewhere, one of Farrah's former boyfriends arrives; Taylor discusses her daughter; and the group members face past demons.
The couples' journey comes to an end with a boat ride in the Season 4 finale. Also: They reflect on lessons learned; and Jon surprises Liz with a gift.