I Don't Know Why But The Next Duke Who Said "I have no intention of loving you" Is Doting On Me

Elsa, the daughter of a fallen nobleman, received a piece of good news. A proposal of marriage from Julius, a very elite noble. "Why would such a nobleman marry me?" But after the wedding, Julius, who had been so kind and gentle up to that point, suddenly changed. He said in a cold voice, "I have no intention of loving you." ?! Next Duke x Fallen Noble's daughter's romantic comedy.