|Nickname||Troë; Millivas; Rilligan|
|Intimacy Level||Best Friends; Former Rivals|
|Friendship Started||My Own Worst Enemy (1304)|
|Friendship Status||Best Friends|
When Tristan learns that Zoë Rivas, the star of West Drive, his favorite TV show, will be accompanying him and a group of Degrassi students on a summer trip to Paris, he is determined to become her friend. Zoë, already familiar with Tristan through his vlog West Drive Experience, instantly takes a liking to him. The two seem to have hit it off, though Zoë's dislike and treatment of Tristan's best friend Maya soon proves to be somewhat of a problem. This combined with the fact that Zoë got involved with Miles seemingly only to spite both he and Maya, led Tristan to develop a dislike for her.
Season 13In Summertime, Tristan and Maya are looking forward to the summer trip to Paris the school has organized. When they come to Degrassi to learn about the details of the trip, it is revealed that Zoë Rivas will be coming along as well. Tristan explains to Maya that Zoë is one of the stars of his favourite TV show, West Drive. Tristan offers Zoë a seat next to him. He is shocked to find out from Zoë that the cast of West Drive is familiar with him, and watch his vlog religiously. Although there is already obvious tension between Zoë and Maya, starstruck Tristan remains blissfully unaware of it. Zoë mentions that she has backstage passes to a Fefe Dobson concert later that night, and invites Tristan to come with her. She also reluctantly extends the invitation to Maya. At the concert, Zoë and Tristan have no problem getting into the club. However, the bouncer is not convinced that Maya is over 13, and won't let her in. Maya looks plaintively at Tristan for help, but Tristan tells Maya that he can't let Zoë go into the club by herself. The two of them then leave Maya outside.
In All I Wanna Do, Zoë looks over at Tristan while he pretends to be in a relationship with Maya.
In Barely Breathing, Tristan is seen in class as Maya sings her "death song" to Zoë and is clearly stunned.
In Spiderwebs, Maya finds out that Tristan is hanging out with Zoë so Tristan tries to make a truce for the holidays.In Unbelievable, Tristan is supporting Zoë for what happened to her.
In Close to Me, Tristan and Zoë telling Maya what Miles and Zig are gonna say to her and how it's going to play out at the dance.
In Army of Me, Tristan and Zoë are seen in class with Maya.In Everything Is Everything, Tristan and Zoë are seen in Mr. Yates class as Zoë reads her paper to the class in the woods and giving a look at Tristan for the comment he made saying he agrees with Mr. Yates. Later they are in the hallway by Zoë's locker talking to each other about the book he's reading about a student and a teacher and then she responds that the book is pretty twisted he tells her about Mr. Yates and asks her what he should do she responds run as fast as you can.
In Sparks Will Fly (1), Tristan and Zoë are seen pumping into each other and Tristan helps her pick up her books and Tristan sees the book for the quiz team and he tells Zoë that no one will judge people like him. Zoë says that she doesn't think she nailed her audition so Tristan brings up and says why don't you bring up the assault and maybe they'll give you a second chance and she responds you think that will work? he says yes. so she gives it a shot.
In Sparks Will Fly (2), Zoë and Tristan are seen together while Tristan tries to help her hide from her mom and then he tells her she should stand up to her mother.In Hypnotize, Tristan and Zoë are seen walking into class with Maya when Tristan gets a text from Becky they get all happy and Zoë says "Do you think Becky will put me in the fashion show as a model?", and Tristan responds "Buy me lunch and I'll see what I can do".
In Out of My Head, Tristan walks in and says "That time of the month?", Zoë responds "Imogen is literally a crazy person I don't know how we're going to have a freaking fashion show when she ruined all the formal wear". Tristan says "I'm sure everything will workout things always do". Zoë responds "You're rather chipper", he says "I have a big date tonight and can't tell", Zoë says "Oh it's sexy when it's secret".
In Believe (1), Tristan and Maya talk about Zoë's case causing Zoë to come up to see what is going on. Tristan goes to Zoë's trial and tries to make her feel better.
In Believe (2), Tristan and Zoë are in the gym and Tristan was going to show her the video that the reporters are doing about her but Zoë says she wants to move on after Tristan shows her the video.
In Thunderstruck, Tristan and Zoë are seen in the hallway and Tristan says the two of them are going to rock the dance floor. Zoë responds saying that she's going to the dance with Zig instead. Tristan tells her that he needs her at the dance to take his mind off of the situation with Mr.Yates.
In Smells Like Teen Spirit, they walk up to the school after spring break together and receive flyers from Becky for her new competitive cheer leading team. They are both excited for it, but Becky pops Tristan's bubble when she says it's girls only. They then enter the school together.
In Walking in My Shoes, Tristan listens to Zoë while she says everyone hates her for the new school rules and Tristan replies not everyone, meaning him. Zoë tells him she has a plan. Later, Zoë is telling Tristan all about how her plan to sneak cell phones to the kids at school worked and she goes to pick them up but she gets busted by the school principal and Tristan leaves.
In #BuyMePizza, in a classroom, Zoe questions Tristan about Esme and says she thinks Esme was messing with her, Zoe asks Tristan if he believes she wants to kiss guys? but Tristan refuses to answer, Zoe says she only liked Grace because she thought Grace liked her back, Tristan says she's suffering from low self aseam but being gay is way better than that, Zoe says she's focusing on nor romantic things like landing this part but just then Zoe gets an email from Winston saying she didn't get a call back for the part and Zoe's upset.
In the student council room, Zoe is telling Tristan about the kiss between her and Esme, Zoe sits on Tristan lap and attempts to seduce and kiss him but Tristan says its not working for him. Tristan asks if she liked the kiss? Zoe says kissing feels good with anyone, Tristan says especially when your a lesbian who's kissing a pretty girl, Zoe says shes not a lesbian and doesn't want to be one either, Tristan asks why not?, Zoe said she never pictured her life like that, she always pictured a big wedding, kids, long hair, Tristan says you have that with a girl too, Zoe says it seems so hard though, Tristan thinks that being honest with yourself is easy though and says its easier for him, Zoe says she doesn't want to be like him, she wants to be normal, Tristan is rightly pissed at Zoe for this statement and tells Zoe that just because she's in the closet doesn't mean she has to be a homophone, Zoe tries to apologize but Tristan tells her to live in the closet all she wants but don't put her self hatred on me before bailing.
In the student council room, Tristan, Winston and Zoe are talking about gala when Esme arrives, Winston gives Zoe the part over Esme and both she and Zoe seem saddened by it and Esme leaves. After, Winston bails to go get something, Tristan accepts Zoe's apology for what she said before but is surprised that Zoe is dating Winston because he's a boy and not a girl, Zoe said she's not about labels and is going to be the person she wants to be, Tristan says she wants to be Winston's girlfriend?, Zoe says he likes the best version of her and that's whats going to make me happy, Winston returns and tells them he has a great idea for the gala and as Winston and Tristan chat about it as Zoe watches Esme.
In My Own Worst Enemy, Zoë listens in on Tristan and Maya's conversation about Miles and asks him who he's talking about. He tells her that he's certain that Miles has feelings for him and Zoë disagrees and tells him she will get to him first. They both ask Miles to be their partner, and Miles chooses Tristan, angering Zoë. Later, Tristan sees Zoë on Miles's lap, which upsets him.
In About A Girl, Tristan is heartbroken over Miles and Zoë making out everywhere. When Maya points out the fact that he was gushing over Zoë just four days ago, he says that while that may be true, she's dead to him now.
In Honey, Zoë "spilled" juice on Maya's expensive dress, and Tristan got mad and told Zoë off, saying "you're something else" and leaving to help Maya.
- Zoë had a conflict with Tristan's best friend, Maya Matlin, but Zoë became friends with she while Tristan and Maya are not on good terms.
- Both Tristan and Zoë developed feelings and had a relationship with Miles.
- Tristan is initially shown to be a fan of Zoë because she starred in his favourite TV show West Drive.
- Zoë watched Tristan on his vlog, known as West Drive Experience.
- They both have an interest in fashion and acting.
- They both had a rivalry with Maya Matlin when she developed a crush on a guy that they liked (that ironically liked her back as well instead of them).
- It was also the same guy both times.
- They have both been in a relationship and sexually active with someone who is considered a legal adult.
- They both lost their virginities to them as well.
- Only Zoë's relationship was legal.
- They both lost their virginities to them as well.
- They have both been raped. Zoë by Luke Baker and Neil Martin (as she was passed out drunk), and Tristan by Grant Yates (although his was statutory rape).
- They are both part of the LGBT community.