Pete and Ramona start seeing each other after an encounter in the park, and Jenny has to deal with her friends' reluctance to get to know Robert. Adam and Rachel attend their first appointment for Rachel's intracytoplasmic sperm injection. Heather smacks Josh but makes up with Karen and later returns to Spain. David organises his own 40th birthday party and decides to make it fancy-dress. At the party, he kisses Jessica, and Jenny becomes jealous when she sees Pete and Ramona dance. The next morning, David is surprised to find a Harley-Davidsonmotorbike in the kitchen.

Pete and Ramona spend more time with each other, and she watches him play on Matthew's all-gay football team. Karen meets up with her old college friend, photographer Miles Brodie, as David spends more and more time with Jessica. The cost of Adam and Rachel's ICSI treatment begins to mount. Results from a scan come back, and it is revealed that Rachel is suffering from "partial Asherman's syndrome" resulting from her abortion. Later, he proposes to her.

Adam and Rachel's friends show public support when they announce their engagement, but secretly believe they are doing it for the wrong reasons. Karen becomes jealous of Jenny when she takes charge of planning Brodie's photography exhibition. David and Jessica book into a hotel for a dirty afternoon, and Pete begins chatting with "Girlpower", a woman on an Internet chatroom. She asks to meet him at the school where she works, where it turns out he was set up by two schoolgirls. However, he does get a date with their teacher, Emma. After abandoning the idea of a long engagement, Adam and Rachel decide to get married as soon as possible.