There's this manhwa called My Beloved Oppressor that has a similar plot but the ex-husband is the ML. Blonde hair fl cold duke of the North ml who got married when the ml courted her and proposed. ML is in love with her and is obsessed with her, fl is in love with ML but they both suck at communication so they think they hate each other. The only difference is that vale is an creepy unredeemable asshole









I think I'm gonna stop reading when he gets his memory back cuz it's gonna hurtttttt