stop saying "Kaz would be jealous and possessive over Inej if he thought she and Tolya liked each other" no he wouldn't! Kaz isn't like that! He defends Inej's freedom, autonomy, and desires at every single turn in the books. He spends the entire duology pining over her and yet gives her every single chance he possibly can to walk out of his life forever if she wants. It's the foundational cornerstone of their entire relationship! It's why they work in the first place!

literally the only Crow who does petty jealousy is Wylan and that's that on that, folks