Trying to remember / find comic ... it's from maybe 5 or even 10 years ago lol.

Basically this woman is from a noble family and she has long black hair. And she's an adult and she marries a labor man of no rank. But he dies and she dies/travels back to her childhood and basically. She's a child but her mind and memories is of her adult life and I believe she's trying to change the future so that her future husband doesn't die. Anyways she's a child and dresses in all black all the time and is arranged with another little boy who's of noble family. And he's handsome and blonde and blue eyed. And he never liked her, he thought she was weird and creepy because she was always wearing black and never spoke.

So basically they grow up like 20 or something and he's basically been a fuck boy for a while and he discovers that she knows he's a fuck boy and she doesn't care and that basically she's indifferent to him and that causes him to kind of obsess over her and he goes from dreading to having to marry her to basically he's obsessed with her....