When Lacey's BFF Ally comes to town, they decide to "help" Jenna throw a rager. The next day, a forgetful and hungover Jenna struggles to reconstruct the events of the wild night and find out who she kissed.

Still reeling from Jake's proclamation of love, Jenna considers sleeping with him, believing sex might bring her some clarity about her own feelings.

Jenna's plans to sleep with Jake are hindered by Aunt Ally's wedding, someone from her mother's past and Sadie.

Jake gets upset when he learns of Jenna and Matty's past,breaking up with Jenna saying 'the timing wasn't right'. Matty after finding out goes to comfort Jenna ending up with them making out on Jenna's bed. Once Jake hears Jenna's message on her phone admitting she loves him, he realises his mistake and goes to her house finding Matty and Jenna kissing. Meanwhile Lacey ends up dancing with her old boyfriend Ben at the wedding. Jenna's dad ends up coming finding them dancing and is heartbroken. And, Jenna tells Matty she is still in love with him.

When Jenna and Collin start to get more serious, it causes tension in her other relationships.

Jenna's family and friends decide that it's time to show her some tough love.

After Matty asks for permission to take Bailey to prom, Jenna reevaluates who she has become and who she wants to be.

Jenna is determined to make a fresh start; lingering feelings for Matty harden Jenna's resolve.

Jenna and Tamara compete with sophomores for the Spirit Week title and attention from Matty and Jake.

Jenna has a college romance while managing a male beauty pageant; Tamara desperately tries to win Jake back.

Jenna decides to visit Luke at college; Matty and Jake spend a night in jail; Tamara has an unexpected hookup.

Jenna tries to focus on her finals after the senior ski trip, but aftershocks from the revelation threaten her chances.

Although Jenna wants to have a quiet New Year's Eve, plans go awry and she ends up at a party at Ally's house.

The battle of the sexes erupts again; Tamara and Jenna's "Dude Database" goes viral; a revealed secret causes friction between Jenna and Tamara.

Jenna hires a party bus for Valentine's Day.

Shenanigans ensure while the students enjoy spring break at Ally's rental beach house in Rosarito, Mexico.

Sex, secrets and shenanigans occur at Ally's rental beach house in Rosarito, Mexico.

Some senior pranks manage to cause chaos. Jenna's vow to not think about Matty ends up being tested after she overhears a worrying secret.

While Jenna gets a taste of popularity, Matty struggles with being shunned. Meanwhile, Jake goes after a new girl, and Ally hosts a sex toy party.

Senior Yearbooks are out. Jenna's depressed to see her senior superlative, but what will Matty say in her yearbook?

Jenna wants to tell Matty the truth.

Sadie is forbidden from walking at graduation.

Jenna avoids a new relationship in order to connect with her co-workers. Meanwhile, Tamara throws a chic birthday party for Sadie that leaves more than one partier feeling less than celebratory.

Jake secures shifts for Jenna and Tamara at the country club for the Fourth of July, but Sully’s plans for an after-hours party on the golf course lead to some dramatic fireworks.

Jenna has to decide between an important SCU event and her camp reunion, which leads to an even bigger choice: Luke or Matty.