While Tammy wonders about her future, she, Jonathan and Lizzie are set up and Lizzie goes after Alan.
Jonathan wakes up beside Sarah and plays with her while Lizzie sleeps. He soon goes out to look at his bike. His wallet falls from his pocket and he picks it up, glimpsing Tammy's picture stuck behind Sarah's. Lizzie wakes up and finds Jonathan gone. She takes Sarah downstairs to see him.
Tammy begins to wonder if she really is the 'other woman.' She realizes that she's become a cliché. She even took a roll in the hay with married man. 'This will all work out as soon as he leaves his wife…Oh my God! I am the other woman,' she realizes. She sits down as Remy walks out of the shower for his obligatory topless scene. He starts to ramble about his Christmas shopping while she tries to count his abs and wonders why she isn't with him instead. She leaves the apartment to wander, first to Cassie's barn and then to the square. Watching all the happy couples, she tries to imagine herself with Jonathan a year from now. 'I'm not the other woman; I had him first,' she tells herself. Beth and Mel walk by arguing about Rick. Beth tells her that she knew him first, a statement whose irony isn't lost on Tammy. Mel walks away from Beth to chat for a second with Remy and Tammy. She apologizes to them for the scene, but Remy says that she doesn't have to; she isn't the home-wrecker. Tammy keeps trying to tell herself that she isn’t Beth and then spots Jonathan, Lizzie and Sarah in line to see Santa. Lizzie calls her over and asks her about her Christmas cards. She hasn't had time to send any. 'Yeah, some things just get pushed to the side,' Lizzie comments. Sarah starts crying and they decide to take her home. Jonathan casts a glance at Tammy but doesn't say anything. As they leave, Tammy finds it hard to believe that Lizzie, who is everything that she is not, gets Jonathan and a baby while she gets left out in the cold. A text message from Jonathan appears on her phone asking her to meet him.
Lizzie is looking at herself holding Sarah in the mirror. She looks just like a 'TV mother.' She's amazed that getting pregnant has turned her into a 'good girl' with a hot husband and a mother-in-law who likes her. The only problem now is trying to be patient while Jonathan falls in love with her. She goes downstairs and tries to cook for Jonathan but it's a disaster. Reva comes in and says that it stinks and she should try and stick to what she knows. Reva reminds her that she isn't Tammy, she needs to be herself. It can't have been easy growing up Spaulding, but now, she and Jonathan can have a good childhood together through raising Sarah. Lizzie asks if Reva thinks that she and Jonathan actually have a chance and Reva says that, now, she thinks that they do. Lizzie's excited and remakes dinner. She serves it to Jonathan when he arrives and anxiously watches him eating. He pretends to choke and then laughs and tells her that it's good. Pleased with herself, she goes on a walk with Lillian and gives her some earrings as a gift for all of her help. Lizzie says that she just wants to deserve her happiness and Lillian tells her that she does. Lillian is living proof that you can change your ways and become a better person…she's also all alone, Lizzie sadly realizes. When she returns home, she starts cleaning up the magazine Jonathan has left all over the living room and accidentally discovers a note from Tammy. After reading it, she rips it up and destroys it. A text message comes through her phone from Jonathan asking her to meet him in Cassie's barn.
Jonathan is trying to figure out how to be a dad without being either Josh or Alfred. He decides that he’ll try for the middle ground and be a 'cool dad.' Right now, Sarah is the only thing in the world that he thinks about when he isn't thinking about Tammy. He remembers what happened with her in the barn last night and realizes that he's a cheating husband. This is something he can't be, but sometimes he feels like he's just taking a break by 'playing house.' Sarah begins to cry and he picks her up, saying that he'll never let her get on a motorbike with someone like him. From now on, he'll have to be a good example. He goes Cassie's to look for Tammy, but, only finding Josh, tells him that Lizzie left an earring there. They begin to talk about Sarah and Josh tells him how proud he is that he's stepped up for fatherhood. Josh leaves and Jonathan receives another text message from Tammy asking him to meet her in the barn.
When he goes in, he's shocked to have Lizzie walk in a moment later followed by Tammy. They all realize that they each received messages from someone asking them to meet there. Lizzie's message actually told her to arrive later. They realize that they were set up by Alan who wanted Lizzie to catch Jonathan and Tammy together. Lizzie apologizes to them and leaves, telling them that she has something 'to do'. Jonathan only looks at Tammy but won't say anything before he walks away. Lizzie goes to Alan's room at Towers and tries to remind herself that she's a good girl now. When Alan opens the door, she slaps him hard. She knows that he set them up and tells him to get a life and leave her and Jonathan alone. While it takes Alan a moment to believe that Lizzie just slapped him so hard, he finally points out that, even if he did send the messages, Jonathan didn't go to the barn to meet him, he went because he thought that he was meeting Tammy. Lizzie realizes what this means and falls into her grandfather's arms. She returns home to find Lillian looking after Sarah. Taking Sarah in her arms, she promises to fight for Jonathan, after all, 'good girls don't forget where they came from.'
Jonathan returns home and tells Sarah the story of his life and how his relationship with Tammy made him want to be a better man even if they are 'icky cousins.' Telling her this story helps him realize what he has to do. Meanwhile, Tammy is wishing upon the star atop the Christmas tree for Jonathan to come back to her. There's a knock at the door and she answers it, discovering only a man delivering a parcel. Deflated, she goes back in before Jonathan appears on the porch. They instantly kiss. He tells her that last night wasn't goodbye; he can't leave her, it wouldn't be fair on Sarah not to have Tammy in her life. As things are now, it isn't even fair for Lizzie so, as soon as he works out a way to have Lizzie and Sarah set for life, he'll be able to leave. Then, he and Tammy will have their whole lives together and this won't have to change his relationship with Sarah.
Next on GL:Reva goes to Josh for help. Ava makes one last attempt to get close to Jeffrey. Alan-Michael won't let Ava go. Reva tries to talk to Billy about Sheila.