"Well, give me a clue here. Who am I supposed to be, anyway?"
"Yourself! Look, I'll tell them right now if you want. 'Marisol is a lesbian. She has no interest in me whatsoever. This whole thing is a farce.' Okay?"
I could feel anger heating up my face, but who was I mad at? (11.41-43)
Hmm… it seems like John is more annoyed by the fact that Marisol is gay than the idea that he should tell everyone about it. Perhaps this is because he's not comfortable with her identity. As much as he knows who she is, he wants her to be someone different so they can be together.