Treebros

Treebros is the slash ship between Evan Hansen and Connor Murphy from the Dear Evan Hansen fandom.

Act 1
Connor and Evan attend the same school, though they don't know each other well, regardless both boys share a lot in common. They struggle to connect with their mothers and have a mutual feeling of feeling alone.

At school, Jared points out that Connor's hair is looking very 'school shooter chic', causing Connor to feel annoyed. Jared quickly exists, leaving Connor and Evan alone. Being the socially awkward teenager he is, Evan is clearly uncomfortable and makes a nervous laugh. Connor interprets this as him being laughed at, and gets aggressive towards Evan, calling him a freak and pushing him to the ground. Evan then sings 'Waving Through a Window'.

Back at school, Evan writes his daily letter to himself and prints it out. He is approached by Connor, who asks Evan what happened to his arm. Evan tells him he fell out of a tree. Connor asks to sign his cast and writes the word 'CONNOR' in large letters. Following that, he remarks they can both pretend they have friends. Evan begins to leave but is stopped by Connor who reveals that he found Evan's letter. He becomes furious at the mention of Zoe on the letter, thinking Evan intended for him to see the letter in order to make fun of him. He storms out, taking the letter with him.

Evan was worried with what Connor would do with the letter, which Connor's parents later found on him when they realized that Connor had taken his own life and mistook the letter to have been written by Connor to Evan. Who tried to tell the Murphys that it wasn't the case, but couldn't bring himself to do so after seeing the state that Connor's death has placed them in. In which later began a well meaning lie of Evan being Connor's secret friend. As Evan has dinner with Connor's family, he recreates the story of how he hurt is arm when he sings 'For Forever'. By having Connor with him when it happened and how they were hanging out with one another before Evan fell out of the tree. Evan had also lied about Connor having a second account for the letters they email to one another and promised the Murphys that he'll show them some of them. Once he gets Jared to help him make the second account and Connor's fake letters to Evan. While Evan sings 'Sincerely, Me' with 'Connor', he makes sure that the letters bring Connor out in a good way than the person he had presented himself in public.

Fanon
Treebros is the most popular ship of the fandom, arguably more popular than the musical's main ship, Zoevan. The most popular incarnation of this pairing is the original Broadway cast: Mike Faist and Ben Platt, as Connor and Evan respectively. Though other incarnations are still popular.

Fandom
FAN FICTION

Trivia

 * Some actors have portrayed both Connor and Evan on stage. In the original DEH production, Colton Ryan has portrayed both Evan Hansen (in a swing role) and Connor Murphy on separate dates. Likewise, another swing Roman Banks has also portrayed both characters. More famously, Michael Lee Brown has also played both parts, and this is parodied in his "Sincerely, Me" cover.
 * Other actors who have portrayed both roles include David Jeffery (First National Tour/Toronto/Broadway), Noah Kieserman (First National Tour) and Josh Strobl (Toronto/Broadway).
 * Though not from an official production, Darren Criss (Glee), and Grant Gustin (The Flash) portrayed Evan and Connor respectively in a cover of Sincerely Me at the Elsie Fest 2018.