help

looking for an angsty romance manhwa that i forgot the title to…
i believe the fl is an illegitimate child or had the traits of a noble family. her family sucks and she has trauma from it. her dad married her off with the ml, who has black hair, and he hates her. so when she’s at his manor, she’s treated badly by both the maids and the ml. suddenly, he had to go to battle & he lost his memory, so fl and him got closer but then, he had to go to battle once again, causing him to gain back all his memories expect when he had a genuine bond w fl. i think she ran away when his terrible self came back & he searched for her? i forgot after that…
ty!