anon_author123
Simon Spier wasn't always Simon. He was born a she, her name, Brittany. Most people don't know he's transgender, everyone sees him as Simon. His name was officially changed so teachers call him that, he takes testosterone so he has a deep enough voice, but he still has a smaller frame. When he sees the post on CreekSecrets by a man named bluegreen saying he's gay but likes trans men, well Simon can't help but respond.
(Simon Vs the Homosapiens Agenda Trans Simon fic. Basically the same events of the novel. I own nothing )