Lmao this mf I swear to God. Throwing bro under the bus TWICE.
While I LOVE the friendship between Annabel and Prospero to bits, I SO hope he finds out about the whole "He definitely has a crush on you giiirl, he's just shy!" thing she set up for him and Ada. It'd be amazing. Since Ada is pretty loopy in canon right now, it'd be the perfect opportunity to re-open that topic.
Most of me wants Prospero to understand and be like "hey, u did what u had to do. I understand what it's like to try your best to survive by any means necessary" (and if him finding out were to actually happen, this would most likely be how it would play out. It makes the most sense with his character.)-- but a SMALL and TREACHEROUS part of me wants him to feel betrayed so, so bad.
I feel like, out of the two, he was the first one to feel more comfortable and amicable towards the other. Whether it was because she never tried to touch him without his permission or make any romantical advances towards him, OR because he saw something in her that he could relate to (that mask of coldness and the fear she hides behind her perfect facade), we can clearly see a few moments where he feels (what seems to be) actual concern and admiration towards her, so him being genuinely hurt by her scheming behind his back wouldn't be outside the realm of possibilities imo.
The angst potential!!! Imagine if he straight up refused to be part of the team any longer! Like, going solo from that point on. It could also reflect his solitary life before dying. He is used to being alone, whether he likes it or not.
I can see him turning towards her with an expression of pretended coldness and genuine hurt, asking her something like "was I good a puppet Annabel Lee?" In a harsh tone.
It will most likely never happen, and to be honest, I'm not even sure if I want it to happen. Him being her closest friend until the very end is too perfect.

















