Keith heads down to the gym in an attempt to get in shape, but soon becomes jealous of Rosie's personal trainer, Mark. Keith and Rosie organise a movie night, and buy some ridiculous costumes to wear. Rosie helps Keith write his latest book, Being Keith. Later, the pair jet off to Marbella to shoot Keith's very own calendar for 2013. However, being unable to tell Rosie that he loves her, and flirting with a group of girls leaves Keith in the doghouse. Back in Britain, cracks are beginning to appear in their relationship - are they strong enough to forgive and forget?
