actually Oscar fall for Riddle in their first meeting, like how Riddle love Oscar. But u see, bcs so many misunderstanding and u know that the two of them doesn't have good communication, in the end Oscar thought that Riddle reluctang to marry her and Riddle thought that Oscar hate her
And later In the next chap FL'll meet Emilia, got scold by Oscar bcs he thought that FL want to snatch the potition as his second wife but FL got mad at him, even SLAP him

but later FL Will become Emilia's tutor