After another aborted attempt at sex with Fola, Zack impulsively buys some Viagra at the chemists and bumps into Esther. After their prescriptions get mixed up, Zack is embarrassed to realise that Esther will discover what he bought.

As Zack tries to process what he witnessed the night before, Josh and Fola try to agree the rules for their clandestine relationship, only for Josh to unknowingly break them straight away... Meanwhile Esther is planning her ten-year school reunion and is excited to catch-up with some long-lost friends.

While out on their joint stag and hen do, Esther discovers a secret that threatens her relationship and Josh is forced to make a confession. Meanwhile after bonding at the funeral, Zack and Fola’s relationship seems to be back on track…

As Josh tries to salvage his relationship with Esther, Fola and Zack rekindle their sexual attraction in the most unusual way.

Caught between the two women that he loves, Josh asks Nina for some sisterly advice. Realising that he can’t keep lying to himself for ever, Josh decides it’s time to tell Fola how he really feels about her…

As the events of the party spiral out of control both Josh and Fola risk their relationships for each other, only for Josh to realise that Fola might not have been entirely honest with him about her relationship with Zack…