When she discovers her mum's school grades dropped the year she got her first boyfriend, Lily tries to avoid the same thing happening to her.

Lily complains Rob is too 'boy' - she finds his boisterousness and burping gross and decides to give him a dose of his own medicine.

A business studies competition is announced at school, and both Lily and Martha desperately want to be project manager.

Lily decides her bedroom is babyish and needs a makeover to reflect the fact she is now a sophisticated teen.

Jas is asked to be a bridesmaid but is worried about being too clumsy. Meanwhile, Mr Salford has to make a presentation.

Jas transforms the art room into a spaceship to conduct an experiment into how teenage boys deal with being cooped up together.

Martha starts acting oddly, getting emotional and over-reacting to things. She's horrified to realise that her hormones are kicking in.

Martha and Ollie throw Cassie and Maxwell off the maths team, desperate not to be outshone as they were last year.

Lily tells Cassie and Maxwell about Rob's inability to get angry and they resort to hypnosis to cure him.

Lily worries that Jas is feeling left out. With Ollie and Martha practically a couple as well as her and Rob, she decides Jas needs a boyfriend.

Lily is delighted when Rob buys her a present for the first time - only it's a horrible bug-shaped brooch!

When Lily and Martha get the flu, Maxwell and Cassie are roped in to replace them in the school's general knowledge quiz.

Martha is offered a place at Greatacre, the boarding school her mother once went to, but Ollie and Alfie can't cope with the idea of her leaving.