|Intimacy Level||Acquaintances, former unrequited crush (on Tristan's part)|
|Friendship Started||Gives You Hell (1) (1203)|
|Friendship Status||Friends (until Campbell's death)|
Tristan and Campbell first met each other in Gives You Hell (1) when Tristan made Maya Matlin raise her hand so that Campbell could be in their French group. He immediately developed a crush on Campbell, though got over it shortly after. The two were friendly until Campbell committed suicide. After hearing the news of his death, Tristan was shown crying.
Season 12In Gives You Hell (1), they are first seen in each other's French group. Because of hockey Campbell is lacking French credit. The next day Maya brings to Tristan's attention that Campbell sent her a friend request on Facerange, and that she thought he sent him one too. Campbell tries to chat with Maya on Facerange but actually ends up talking to Tristan instead when Maya didn't log out of her account. During lunch Campbell goes over to Maya and asks her if she still wants to hold his Season 1 Lost DVD, which she has no clue what he's talking about but Tristan tells her to go along with it admitting that he was the one who was talking Campbell. Maya tells Tristan that if he likes Campbell he should go talk to him. Tristan walks over to Campbell's table where Campbell is rude to Tristan because he is with his friends. Later on he apologizes to him saying that he only acted like that to fit in because he is homesick, and his hockey team is the only family he has.
In Waterfalls (1), Maya asks Tristan if he is okay with her dating Campbell, and Tristan sings to her that he is over it, which has Maya and Tori happily swaying to his song in response.
In Waterfalls (2), Tori and Tristan are sitting next to one another in class, and text Maya, asking about her date with Campbell after they catch her staring at him. They are caught by the teacher and their messages are read aloud to the class.In Rusty Cage (1), Tori, Tristan, and Maya tease Campbell about what his hockey nickname is. Later at Little Miss Steaks, Zig, Tori, Tristan, Maya, and Campbell are hanging out at karaoke night. Tori and Tristan begin to dance when Maya and Campbell take the stage.
In Doll Parts (1), Tori and Tristan gives Maya a makeover, who was hoping it would impress Campbell.
In Tonight, Tonight, after Campbell passes his oral conjugation test in french, Tristan along with the rest of the class applaud for him.
In Bitter Sweet Symphony (1), Tristan warns Campbell that Zig will stop at nothing to get Maya to ditch him.
In Bitter Sweet Symphony (2), he and Tori are seen crying after hearing the news about Cam's suicide.
- Campbell's first line was spoken to Tristan and his friend Maya Matlin. ("Hey.")
- Tristan pretended to be Maya online so he can talk to Cam.
- Cam dated one of Tristan's best friends, Maya.