In the season three premiere episode Jenna's junior year brings a wave of surprises and changes that potentially will impact her future in an indelible way.

As Jenna continues to question where she's going with her life, she has a new concern: Matty is suddenly becoming emotionally distant.

Jenna's father takes matters into his own hands to talk to Matty's parents about their kids' relationship.

When Matty moves in with the Hamiltons, Jenna discovers that cohabitation may be more than she bargained for.

The ghosts of Jenna's past reveal themselves along with Jenna's insecurity as Halloween hits Palos Hills.

Jenna's first date to the Homecoming dance conjures up old feelings of guilt for the girl she used to be and the girls who don't have dates.

A challenge from Mr. Hart forces Jenna to expose herself publically and in the process, she is confronted with some disturbing newfound revelations about herself.

After a late night coffee with Collin, Jenna can't stop thinking about him and what it means to have a crush as well as a boyfriend.

Tensions arise between Jenna and Matty when Collin invites her to a swanky photography showcase at his house.

After an impulsive make out with Collin, Jenna resolves to end her infidelity before Matty finds out.

Everyone pieces together events from Jenna's birthday party to figure out if her and Matty are still together.

Jenna and Matty's breakup forces their friends to choose sides.

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

Sadie's idea for Val's After School Special production rubs Jenna the wrong way.

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

Jenna decides that it is time to change her ways but could it be too late?

Lacey starts her new job at Palos Hills and Jenna has a wake-up call that puts everything almost back to normal.

Everyone at Palos Hills starts preparing for prom, while Ming is more concerned about her future with the Asian Mafia. Jenna does a few good deeds but it might not be enough for karmic relief.

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