This page describes all of Haiku's relationships with her friends.
In "Dance, Dance Resolution", Clyde covers for Lincoln by dancing with one of his four dates: Haiku, a friend of Lucy. Clyde admits to Haiku that he is smitten with "an older woman," Lori. Haiku explains to him that she is also hoping to enter an impossible relationship with a 200-year-old vampire boy. They smile and have a conversation about unrequited love. Haiku tells Lincoln later in the episode that she enjoys Clyde, because they "share the same pain". She and Clyde share a slow dance together at the end, all while looking at photos of their respective crushes.
In "Out of the Picture", it is revealed that both Lucy and Haiku are part of the Morticians Club. After Lucy disagreed to let Clyde and Lincoln pretend to be a members of Morticians Club to be taken on their group photo, Haiku persuaded her to agree.
In "Fandom Pains", she, along with the rest of the Morticians Club, agrees to help Lucy secure signatures to remove Tristan from Vampires of Melancholia. She and Lucy also declare "Goth perks" together regarding the candy they collect while securing signatures from people who thought the Morticians Club were trick-or-treating.
Haiku agreed to go on blind date with Lincoln at the Sadie Hawkins dance party. When they first met, Haiku read Lincoln her sad poem. Lincoln told her an improvised poem version of Jack and Jill and Haiku was quite impressed. Lincoln showed Haiku a shadow puppetry, but she showed her more complex shadow puppetry. Haiku was upset on Lincoln, when she discovered he's on dates with three other girls. However, she didn't mind it for long because she found Clyde.