Camilo uses all the pronouns (He / She / They), so the first time Miguel takes him to introduce him to his family in Mexico, Miguel's aunt speaks ahead of time and asks.
"¿Y la novia, mijo?"
Camilo smiles, hugs Miguel and then says: "Yo soy la novia."
Camilo: Familia, I want to introduce you to someone.
Camilo: He is my boyfriend, Miguel.
Miguel: *Holding Camilo's hand* Hola.
Dolores: Who is the other boy?
Camilo: Oh, this is Hiro, Miguel's boyfriend.
Hiro: *Holding Miguel's hand* Hey.
Pepa: I don't understand.
Camilo: Well, Miguel is my boyfriend, but he is also Hiro's boyfriend, Hiro hates me and I hate him.
Alma: Young people and their rare love relationships.
I'll just be sitting here, waiting for the fanfics where Hiro and Camilo fight for Miguel's love, thank you.