Help me find it T_T

so i read this manga looong before and now i can't remember its title.
so basically the story was about a villainess(if i remember it right) have someone she likes, a commoner, and she wanted to annul her engagement with the prince. I thinks she knew she was in a story or smth that's why she wanted to fall for someone else rather than the prince she was engaged with. i don't exactly remember what happend but she ended up meeting with the prince and like everything went so fast in my memory that she was held captive and did the deed with the prince against her will(?). i think it ended with only a feeeew chapters.

One thing I do remember is like the villainess was against something proposed by the prince at first but then the prince showed her a village being blown up not that far from the balcony and I assume its the village of the commoner lover's.

please help me find it, i forgot to bookmark or take note of its title