I Decline the Ex-Boyfriend of the Regretful Male Lead

I possessed a character in a melodramatic regret-filled novel. “You’re not like Anette, your heels aren’t pink.” And I’m the frail first love and ex-girlfriend of the gaslighting Prince. Fittingly, once he starts regretting, he ruins all his ex-girlfriends one by one as penance to the heroine. Especially Anette, his first love, sent to an ailing border lord, dying shortly thereafter… I don’t want to die like that, do I? Before formally dating the Prince, I tried everything to shake off his unrequited love. “My dear Anette, are you playing hard to get?” It backfired, intensifying the Prince’s obsession. Time for a change of plan. Marry anyone! “I’ll be your wife.” I succeeded in marrying. Thankfully, it rid me of the rolling-stone Prince. But then, I discovered my contractual husband’s identity: not a mere guard, but a celibate Grand Duke. ‘He’s not interested in women?’ That’s even better. Or so I thought… “Madam, you looked beautiful with your hair up.” “Madam has a habit of squinting one eye when writing.” “You always cut up your steak completely before eating.” Why does my newlywed husband know so much about me? And then, academy photos of me fell out from between the pages of a book in his study… “Madam. What are you looking at?”