Now unemployed, Billie spends her days drinking and doing cocaine with Maureen. When she finds herself in need of cash to pay her overdue electric bill, no one – not even her mother – will assist unless she seeks help. Meanwhile, Dave invites his friend Marcus to stay with him after his wife kicks him out.

Billie is served an eviction notice and Maureen has an idea. But what Maureen has in mind could result in something even worse, which leads Billie to rock bottom and ready to admit she has a problem.

Billie, now recovering, gets a job with Trudy's lawyer boyfriend. Her first task is to serve Marcus divorce papers.

Billie tries to figure out her relationship with Dave. Marcus tries to lose himself in his work after being served.

Billie wonders if she should tell Dave that she slept with Marcus.

Billie and Dave hit a rough patch after her affair with Marcus is revealed.

At jury duty, the other jurors try to get Billie removed. Marcus faces a lawsuit and an assault charge.

Marcus asks Billie out. Dave becomes attracted to Raquel.

Marcus feels excluded from Billie's life, so she invites him to an AA meeting. Billie has a difficult time with her new responsibilities as the AA group secretary.

Billie learns that Marcus has an interview with a prominent director and tries to set up a meeting of her own. Clark wants to hold AA at Dave's restaurant.

Clark and Henry ask Billie to carry their baby, but Marcus doesn't agree. Dave suffers from chronic tiredness since dating a female athlete who beats him soundly at every sport they try.

Dave and Marcus attend a party at the Perfect 10 mansion without telling Billie and Raquel. Invitation-less Billie and Raquel hatch a plan to get even. Meanwhile, Nobby Clegg makes amends with a playmate.

Trudy enters the hospital for plastic surgery, but the doctor refuses to do the operation because her alcoholism has led to a life-threatening heart condition. Martin tells Billie he is leaving Trudy.

Trudy moves in with Billie in an effort to adopt a more sober lifestyle. Dave and Marcus shoot a video to send to Raquel in Australia.

Marcus' demanding father visits, unaware that his son is getting divorced and that he and Billie are dating. Pregnant Haley asks Dave to act as her husband at a college reunion because she doesn't want anyone to know she's a surrogate for a gay couple.

Billie gets a small role in a new film. She's attracted to her co-star, whom she has to kiss. Dave and Haley share an awkward lip-lock, while Marcus spends the night with Nancy, whose mother has just died.

Dave tries to tell Billy that Marcus is involved with Nancy again. Dave initially gives the wrong impression when he attempts to warn Billie, but things come to a head when Marcus arrives to his own surprise party with Nancy.

Billie goes on a date with movie star Jake Newman, but he dies during the date, and Billie is asked to speak at his funeral service. Dave accidentally proposes to Raquel when she tells him her VISA has expired.

Dave is caught up in a jewelry store robbery with Billie on the day of his bachelor party while shopping for a wedding ring for Raquel. Trudy wakes up in the arms of a handsome man who turns out to be an expensive gigolo.

Billie takes extreme measures to prevent Dave from marrying Raquel, including seeking out a medicine woman to place a curse on the ceremony. Marcus and Nancy reconcile.