Truly this is one of the best why choose novels I’ve read.
The main character is canonically demisexual, though she doesn’t use a label. It’s excellent demiseuxal representation.
The relationships between the men are so rich and well written. There’s M/M and strong friendships/ intrigue between them all. There’s so much plot and intrigue that it never feels boring. Each relationship develops on its own timeline so it feels believable.