After a rocky summer with her boyfriend Jason, Lauren decides to break it off and returns to Teen Vogue to face her unhappy boss. Heidi finds herself in trouble with a guy both she and Audrina are dating.

Lauren goes on her first date since Jason and is tested at work when she's asked to work a fashion show. Heidi has a life changing secret she must tell her boyfriend.

When an uninvited Audrina shows up at Heidi's birthday, she learns Heidi's not ready to forgive and forget. Lauren, determined to focus on work, falls for the charms of the new guy in her life, Brody.

Audrina tells Heidi about Spencer's cheating ways, but Heidi is doubtful - until she sees it for herself. Lauren continues to wonder whether she is ready for a relationship.

Heidi takes a break Spencer but finds herself missing him more than she'd like. Lauren has to plan a Teen Vogue dinner but takes a backseat to super-intern Emily from New York.

When Lauren tells Heidi what she really thinks about Spencer, Heidi must choose between her best friend and her boyfriend.

Lauren realizes she can't trust her best friends after Heidi hooks Jen up with Brody.

Heidi and Spencer take a trip to Santa Barbara.

Spencer asks Heidi to move in with him but Heidi doesn't know what to do or how to tell her roommate, Lauren.

Lauren's 21st birthday is full of surprises when Heidi and Audrina throw her a party.

With a new job on the line, Whitney stumbles in her biggest opportunity with Teen Vogue. Spencer goes too far when he pressures Heidi to leave Lauren and move in with him.

In this season finale, tension comes to a head as Heidi makes her final decision about moving in with Spencer.