Well of course they're well fit. AND they've been looking at each other longingly for the last two books, although I couldn't tell from the picture whether that was definitely Phoebus or definitely Efrain. I mean obviously she's going to have to choose between them. There have been all sorts of hints that Efrain will die heroically (unless Amaranth dies heroically! but I don't THINK the author will kill off the protagonist and neither does Honoria!) And if he does, I guess she'll end up with Phoebus.

(There's also this other girl Agrona who's in love with Efrain but she doesn't deserve him, not after what happened at the end of Pure Power.)

Anyway it's not going to be JUST shagging, they have to overthrow the unjust government!