After this, Wyatt asked Caitlin for help, but Caitlin accidentally gave him bad advice from a magazine, and Marlowe caught him rifling through her bag. Later, though, Marlowe walked in on him writing a love song, and Wyatt shyly confessed it was about her. They realized that they like each other, and simultaneously asked each other to the dance. There, Marlowe and Wyatt played a set with their band, where Wyatt's love song was in the setlist.

Marlowe's next appearance was in "Baby, You Stink." She was first mentioned at the start of the episode by Wyatt, who had gone to a concert with her the previous Saturday. She later appears throughout the episode, where Wyatt avoids her due to the bet (which states that he isn't allowed to clean himself at all) until she reveals to him that she knows about the bet and is perfectly fine with it.

She then appears in "Selling Out To The Burger Man." There, Wyatt once again worries about his relationship with her after Jonesy suggests to him that money is the most important aphrodisiac for the first three months of a relationship. This (combined with Marlowe's belief that Wyatt could easily write a killer jingle) caused him to sign the band to a contract with Burger McFlipster's in exchange for rehearsal space and free food.

Marlowe ends up being the go-between for Wyatt and the band, as Wyatt is the one who receives instructions that force him and the band to do more and more things that they don't want to do. She acts as the one who convinces the band to go along with things, and when the band finally has enough and quits, she is the one who tells him, but she continues to be his girlfriend. When Wyatt is shocked by this, Marlowe points out that she likes him for his talent and personality.

Marlowe doesn't appear again until "Mr. and Mr. Perfect." There, she witnesses Jude trying to get a tan under fluorescent lights while setting up a makeshift beach for himself by the mall fountain. She is later seen when Wyatt sings a love song to her, which Ron overhears, spurring him to arrest Wyatt on trumped-up charges in order to get free guitar lessons from him and learn the song.

In "Date and Switch," she and Wyatt no longer have a good relationship. They have fallen into a rut, and Marlowe ends up deciding to break up with him. She is initially held off from doing so herself by Jonesy, who argues that he should be the one to break up with Wyatt for her; while Jonesy does manage to break up with Wyatt, he does a horrible job of it. Marlowe ends up finding Wyatt at the ice cream store, though, and breaks up with him in a much kinder manner, telling him that they've just been spending too much time together. Despite breaking up with him, however, she still likes Wyatt as a person, and vows that they'll be "the best of exes."

Even though Marlowe promises this, Marlowe only appears in the show one more time after breaking up with Wyatt. She makes a cameo in "Quit It" inside the Khaki Barn at a sale, where she gets handed a pair of jeans by Kristen. She doesn't speak, and this serves as her last appearance in the series.

In "Baby, You Stink," the ringtone on her cell phone is the song Wyatt performed onstage in "Idol Time at the Mall" where he changed the lyrics to diss his friends. Like Nikki, Marlowe wears brown wristbands. Marlowe might be vegetarian, because one of the things that Wyatt ordered for her from Burger McFlipster's in "Insert Name Here" was a veggie burger. In "Love at Worst Sight," during her short-lived employment at Spin This (and short-lived friendship with Serena), Marlowe admits that she likes country but initially pretended not to like it because of Wyatt's strong dislike of it.

In "Insert Name Here," Wyatt accidentally calls Marlowe Serena, upsetting her. When Wyatt repeatedly shows that he's not quite over Serena, Marlowe calls for them to take a break until Wyatt can get over his ex. With Caitlin's help, Wyatt manages to do so, and proves to himself that he's completely over Serena and into Marlowe. After this, they get back together again.