Billie invites herself to Zack’s high school reunion but worries that she can’t compete with his hot, ex-girlfriend in her pregnant state. Meanwhile, Olivia helps Abby host a party where they try to sell Abby’s miracle youth juice
Billie and Sully work on a story together which leads to a surprising discovery about the paper. Zack begins a new work adventure with Davis as his partner.
To prevent the surprise shower they are planning of being exposed, Abby and Nick convince their significant others to spend time with Billie and Zack, but the plan doesn’t go as expected when both Billie and Zack dislike their new friends.
Hoping not to ruin their Christmas, Billie tries to keep the fact that Zack is living with her from her parents. Meanwhile, Nick makes an effort to impress his father-in-law.
Billie and Zack take parenting classes separately because of schedule conflicts and realize how little they know about being parents.
After James employs a new movie critic for the newspaper, Billie sees her job in peril and starts showing her value to her boss.
When Billie begins seeing another man, Zack starts to show his jealous tendencies.
Billie unintentionally causes Abby and Nick to break up when she asks them to be Godparents. However, after a fun night on the town with Davis goes too far, Billie must stop Abby before she does something she will regret.
Billie and Zack have their first big argument after Zack tries to surprise Billie by installing a low flow toilet
Billie and Zack have their first big argument after Zack tries to surprise Billie by installing a low flow toilet.
Billie and Zack discuss their stand on dating and agree that they can see other people. However Billie sees that any potential candidate turns her down because of the pregnancy.
Billie realizes that men find her more attractive despite her pregnancy. Even Zack sees her curves as a turn-on. Billie makes the move on him, but is turned away by Zack following an untoward incident involving suntan lotion.
As Billie looks through Zack’s things, she finds an unfinished note intended for her. She attempts to discover what Zack is keeping from her.
