Responses
I think it's "Taming A Shrew"?
It sounds like "I tamed my ex-husbands mad dog"
No it's not taming a shrew because I have read it its not even the same as the Op explains the story
i need a eye check. I didn't notice the duke
I think there is word "tame or taming" on its title. It's a story about the poor girl marrying to duke/ has high status and is rich but openly cheating on her. Then she this black haired guy who is a knight / prince which she saved once and will eventually she will teach to fight with her swordswomanship lol. Sorry for horrible description. Help me kudasaii ╥﹏╥