The only mention of her father is in episode 3.02 when Summer mentions raffling off a gas guzzling SUV from Taylor's father's dealership, and in an episode in season 4 where she is trying to convince Ryan to see his father by telling him that her father "lives in San Diego with his new family, and is in Newport once a quarter to check on his car dealership", and tell him that she hasn't spent more than 20 minutes with him since second grade.
Taylor's power-grabbing encourages an otherwise reluctant Summer to seek the social chair position. Summer's biggest test as social chair comes in organizing the annual school carnival, as she successfully coordinates the mix of rides, food, and events. However, when Summer plans a Fall dance for the school, she is overshadowed by Taylor, who takes credit for it, and the new Dean of Discipline at Harbor.
Initially, only Summer seems aware of Taylor's scheming, while Marissa seems only mildly interested in the goings-on in Taylor's life, and Summer's boyfriend Seth Cohen seems to not believe Summer's story at all. At this particular dance, Summer follows Taylor and catches her kissing Dean Hess in his office. Though she tries to convince Seth of what she's seen, no one will believe her.
In "The Perfect Storm", Summer manipulates Taylor to finally get proof of an affair between her and the dean to present to Seth by telling the girl that Dean Hess and another faculty member at the school were making out under the bleachers.
Seth and Summer eventually convince Taylor to go to an area motel (the same motel where Luke Ward and Julie Cooper had an affair, as well as where Ryan met up with his onetime girlfriend Theresa Diaz one night) to meet with the "Dean," only to surprise her when they answer the door and begin throwing out accusations. Threatening to tell everyone of the affair, Summer forces Taylor to tell Seth's dad the truth. Later, Sandy confronts Dean Hess and tricks him into believing that he has pictures of the two of them kissing on his Sidekick. In return for keeping quiet, Sandy tells Hess to let Ryan (whom he kicked out) back into Harbor, and then resign.
Despite being something of a socialite, Taylor is highly looked down upon by her classmates. During "The Swells", classmates threw things at her after she organized a mandatory senior lock-in and attempted speaking to her classmates. Seth came to her rescue, unwittingly gaining Taylor's affection in the process. Taylor, wanting to keep him for herself, refuses to allow a late Summer to come to the lock-in by pretending that she could not hear her. It is also in this episode that we learn why Taylor may be so conniving and manipulative. Her own mother, a highly-driven sports agent, is shown as emotionally cold toward her daughter.
Their relationship is again brought into focus in "The Safe Harbor". When Seth and Summer wanted to get Marissa back in Harbor, they went to Taylor as she could get more names for their petition to reinstate Marissa. Taylor at first wanted nothing to do with it, but she soon gave in and helped out. Threats from her mother to take away her car and college money momentarily deterred Taylor from protest efforts, but she emerged at a school board hearing on Marissa's side, defying her mother. It was a decision that earned Taylor new respect from her classmates, and from Summer specifically.
Later in the year, Taylor develops a romance with a male Korean waiter, Seung-Ho. He takes her to the prom, and his cousin, a member of a Korean boyband, takes Summer.
When Ryan arrives at the meeting place where Taylor and Henri-Michel's lawyer are, he gives Taylor a kiss to "prove" they are together. Henri-Michel's lawyer sees this and agrees to return to France with the news of Taylor's infidelity. Soon, Taylor realizes that she has an infatuation with Ryan and brings to his house a peach tort she prepared herself.
Ryan soon has insomnia, and when Taylor hears about it, she thinks it's her duty to cure him. So, she pretends to be his sleep therapist in an attempt to seduce him. She uncovers Ryan's unresolved feelings towards his late ex-girlfriend Marissa, and towards Marissa's other ex-boyfriend Kevin Volchok who killed her in a car accident. Once she realizes that she and Ryan weren't meant to be, she just decides to give him some tea, that actually helps you to go to sleep. But when Ryan tells her he doesn't know how he feels about her, she tells him to kiss her to see if he feels anything. Once they kiss, she takes advantage a little bit, then stops herself mistaking his silence for indifference. After the kiss, Ryan fantasizes about Taylor washing windows, dancing on the kitchen counter and riding on roller skates, during each of these fantasies Ryan hears Taylor talking dirty to him. Ryan realizes that he likes Taylor and he asks her on the date. However, during the date, Ryan realizes that he isn't ready to begin a new emotional relationship. Taylor tries to make him jealous by paying a homosexual guy named Roger to pretend that he likes her, but he uncovers her move and tells her he's not sure about a relationship, something she says is a long way off, and that any current relations should be purely physical. Taylor and Ryan kiss in a closet and start making out while playing a game of seven minutes in heaven.
In The Chrismukk-huh?, though, Ryan is afraid Taylor thinks that they are both going out and is afraid to ask her to Christmas dinner. Taylor, bringing a present she wrapped herself, heavily hints that she would like to come to dinner. When Ryan coldly rejects her, Taylor works herself in to a fury and starts yelling at Ryan when he is on the roof hanging Christmas lights. In her angry state, she climbs up the ladder to yell at him, but they both end up falling and going in to comas. In their comas, they entered an alternate universe and Taylor hears information that convinces her that Marissa is still alive. When she finds out that Marissa was supposedly alive, she immediately tells Ryan, who sets out to look for her. He later finds out that it was really Kaitlin Cooper, Marissa's younger sister, who was returning from university. Taylor, realizing that Ryan is not over Marissa, goes to a Christmas party in her coma dream and finds out that in her coma she is a boy, and sees her mom bullying him. Taylor then goes and stands up to her, defending herself and calls her mother a bitch. Doing this, she wakes up from her coma.
Veronica Townsend (after some persuasion from Julie) comes to the hospital to see Taylor but is more disappointed that she missed her flight to Mexico. Taylor tells her to get a last minute flight, hugs her and wishes her a Merry Christmas. The encounter makes Taylor happy that she can finally cut her mother loose.
Back in the alternate universe, Ryan, still not sure what to do, tries to matchmake everyone with the right person but realizes that that's not the case -- it was that he had to read a letter from Marissa and move on from her. At the beach, alone, he finally reads it and slips out of his coma. The two have no memory of what happened in the alternate universe, however they both realize that they are at rest with their internal demons, Taylor being her relationship with her mother and Ryan reaching closure in his relationship with Marissa. Ryan rekindles his relationship with Taylor.
Ryan and Taylor are now officially boyfriend and girlfriend. Ryan attempts to organize a special rendezvous for himself and Taylor in The Earth Girls Are Easy but is foiled when Seth decides he and Summer will "tag along" on the trip, due to Seth's failure to plan New Years festivities for Summer. Ryan mistakenly thinks that Taylor may have concealed a prior sexual encounter when Seth reveals that Taylor packed a pregnancy test for the trip. The test was actually for Summer who was "late" and whom Taylor suspected might be pregnant with Seth's child (it turned out to be a false alarm but Seth and Summer got engaged anyway). Taylor is angry with Ryan's assumption that she has been sleeping with other men and the pair argue. Only to later make up when Ryan realizes that the test was not her and her defensiveness was due to her fears of being seen as a "promiscuous divorcee". Taylor forgives Ryan for jumping to conclusions. Later that night, Taylor puts on the lingerie she gave Ryan as a gift, and this is the first time they really fool around.
Now that Taylor and Ryan are a couple, their relationship becomes more serious. When Ryan's dad comes back into the picture, Taylor realizes that their relationship is going to face their first challenge and Taylor meets her boyfriend's father at a dinner and things between Ryan and Taylor are going well.
In "The French Connection" Ryan and Taylor experience a bump in their relationship when Taylor's French ex-husband, Henri-Michel, comes to Newport, and Ryan feels that Taylor has more in common with Henri-Michel than himself. Events come to a head when Ryan discovers Taylor lied about his job, telling her ex-husband that he was an academic. Upset and angry over Ryan not calling her for a week, Taylor rekindles her relationship with her ex-husband. However, when Ryan interrupts Henri-Michel's poetry reading with a love poem that he wrote for Taylor, she realises that Ryan is the one she wants to be with. In the end, despite Taylor and Ryan's affection for each other, Taylor calls things off until she can become a more independent person.
She seeks out help from a therapist, but realizes that her and Ryan are right for each other and they get back together. Ryan and Taylor kiss and they agree to sort out their relationship issues and stalk each other. Ryan and Taylor become a couple again.
On Valentine's Day, now that Ryan and Taylor are a couple again, Taylor wants to do something special with Ryan. They end up helping out Ryan's dad and then Ryan kisses Taylor and they drive to the beach for a romantic evening.
In The Shake Up Taylor tries to have Ryan to say that he loves her. To do this Taylor decides to try and get Ryan drunk to "losen his tongue". In the run-up to Taylor's nineteenth birthday party Ryan contemplates if he should tell Taylor that he loves her. He has been her boyfriend for many months and he wonders if he is ready to take that step. She attempts to get Ryan drunk but instead she become drunk herself. While the couple talks about their romance and the obstacles they face, Ryan finally says he loves her. However he holds back when he finds out that Taylor applied to Berkeley. The prospect of going to college together scares Ryan and instead of his original gift, he gives Taylor a dictionary. Taylor later explains that she had applied to Berkeley before they started dating and asks Ryan if he would have told her he loved her if he knew she applied to Berkeley. When Ryan does not say anything, Taylor immediately understands that he never would have said it. Distraught and upset, she leaves the party without blowing out her birthday candles.
Ryan, after some advice from Kaitlin, gives Taylor the original present he was going to give her, a book of French love poems that Taylor translated. Ryan tells Taylor that he loves her again. When Ryan tells her that he wants her to come to Berkeley with him, an earthquake strikes. He immediately takes Taylor under his arms and protects her using his body as a shield and receives a hit from Taylor's cabinet shelf.
The two survive the earthquake but Ryan hides the fact that he has been injured. Taylor is fine but she becomes very agitated and chatty. She quickly goes through her well-stocked emergency preparedness kit. Seth and Summer make it back to the house unharmed; Seth quickly covers for Ryan, who tries to conceal the fact that he bleeding from his back. After the two depart the house Taylor and Summer look for Pancakes.
Taylor accidentally fires a flare at her mother's foot who came to check on her. Summer, Taylor and Veronica make there way to the hospital. The two women are quite bitter towards each other but at the hospital Taylor tells her mother she loves her. Her mother replies that she loves her too and they share a hug. They both leave the hospital with Summer, the Cohens and the Coopers.
Six months later, she and Ryan have broken up and Taylor has returned to Paris. Both of them refuse to see each other but end up meeting at the airport. It was made very obvious, to them as well as Seth and Summer, that they still had feelings for each other. She was devastated when Ryan told her that the Cohen's are moving to Berkeley, meaning she won't be able to see him anymore. They get to talk at the Berkeley house before Julie's wedding. Initially they both agree to be friends but unable to resist they kiss passionately and end up in bed together, but are interrupted by one of the owners of the house.
Ryan and Taylor spend time together as a couple. They sit on a train together, as she prepares to go to New York and then on a boat to France. They share a heartfelt conversation about their relationship and share another passionate kiss. The two thank each other for the happy memories they shared in the year. Ryan spends one last hour on the train with Taylor before getting off in San Bernardino.
In a flashforward vignette, Taylor and Ryan are seen together at Seth and Summer's wedding, with Ryan as the best man and Taylor as the maid of honor. They both exchange glances and smile at each other. , Taylor has appeared in 35 episodes total.