A fantasy books with enemies

Hi, I really love the vibe of wednesday's and Tyler's relationship, especially in the second season. And i would really love a book where two characters have this sort of relationship that has a dark romance element but neither of them is like an innocent character. Similar vibe to that I read just The cruel prince thrilogy which I really love.

I would most like a fantasy book (but not romantasy please , I am more into like a political fantasy)

And please some well written and thought out books, not something that is just telling and no showing

And if there would be a love element to it, please slow burn but you can suggest me even a book where they don't end up together. And for that enemies part I really do need tham to be enemies not just saying that they hate each other they must really hate eatch other and show it through actions.

Thanks for any suggestion and sorry if i have any spelling or grammatic errors, english isn't my first language.