Grand Duke, It Was A Mistake!

i accidentally kidnapped the grand duke i have a one-sided love for! i ended up accepting the grand duke’s proposal to have a contractual relationship in return for fixing this issue, but……. “vivian. may i kiss you?” huh? are we kissing as soon as we started dating? “we’ll kiss, then we’ll take things further, and then let’s get married, vivian.” ……i’m in big trouble. i don’t think the grand duke is in his right mind……! is this relationship really okay? it was a mistake, grand duke! / 대공님, 실수였어요