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

Jenna tries to communicate with a distant Matty; Tamara questions Jake's talent for music.

Jenna and Matty try stay friends and have sex, but Jenna find the arrangement unbalanced.

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

Jenna and Tamara go on an overnight visit to a college; Lacey craves a college experience; Matty has a party.

An amicable group outing devolves as the night goes on; Jenna realizes that she might still have feelings for Matty.

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

Jenna and Tamara view the possibility of separate futures; Eva plots to keep Matty and Jenna ousted.

Rivalries and romances all come to a head on the Palos Hills High School senior ski trip.

Sadie and Jenna team up to reveal Eva's past to Matty.

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.

Jenna heads for a meltdown after receiving a rejection; "Hell Tent" takes revelations to a new level.

The annual season bonfire becomes a powder keg when Jenna and Tamara find the boys' girl-rating tradition known as the Phone Book and announce it to the school.

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.

Jenna is at odds with Matty's girlfriend on his 18th birthday; Sadie and Tamara battle for cheerleading dominance.

Jenna tries to keep everything balanced, but with the stress of college applications and boy-related drama, her final Spring Break is not much of a respite.

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.