SPOILER!!!
The story in the novel is slow-paced too, so I think we just need to be patient. But rest assured, the MC still chooses Alfonso instead of Cesare. Elko is still trying very hard to destroy their relationship, even going as far as attempting to kill Arie, but it failed! Meanwhile, Isabella is becoming king hoe, while trying to flirt with Cesare.
Main characters? You mean the main couple? Actually Ari and Alfonso started dating after elko's execution. Ari wants to keep it a secret at first but when Cesare came back and personally went to see her Alfonso came, wrapped his arms around Ari as if claiming her even though there were also people around witnessing the scene. Lol
Nahh I fr thought they were in a relationship because sometimes Alfonso just go his way and kiss her

I don't read novels so can someone give me spoiler please....the manga is too slow I want to know when will fl and alfonso clear the misunderstanding and will they get a happy ending