Heidi and Spencer settle into their new apartment whilst Lauren and Audrina settle as roommates.Lauren suspects that Heidi and Spencer were responsible for rumors of her and Jason having a sex tape.Audrina goes on a date with an Australian guy and brings him to Lauren's Halloween party.
In the season finale, Heidi put her job at Bolthouse in jeopardy after going home with Spencer, who surprised her during a business trip to Las Vegas, and Audrina argued to Lauren that it was Lo who was pulling their friendship apart.
Lauren continued to stay close with her childhood friend, Lo Bosworth, and the two decided to buy a house together in Hollywood and invited Audrina to live with them, even though Lo felt uneasy about their decision.
Additionally, Audrina spent more time with former flame, Justin, which made the situation in the house ever more uneasy.
Jason reveals that he has a new girl and invites Lauren to meet her. Spencer reveals he hasn't told his parents about the wedding. Guest stars: The Red Jumpsuit Apparatus It's Brody's birthday and the gang head to Las Vegas to celebrate.
Lauren and Brody share a kiss and the girls get into an argument about Justin Bobby.
Guest star: Stephen Colletti Audrina begins to feel left out at home because of Lo and Lauren's friendship.