Webtoons

FL is used as a tool by her family and is engaged to the ML (in the novel he kills her).

FL BFF's ended up together (she had a crush on her guy BFF). To try to get over him she chooses to lose her V w/ a rando guy from a bar. It ends up w/ her getting 2 bars from a pregnancy stick.

FL has the power to let the cursed Prince fall asleep. He falls first but she has a hard time as she's read the novel of the world she's in and she knows there's a heroine for him in a years time.

FL focuses on maintaining power and peace in her political marriage. FL focuses on business w/ ML since she thinks he already has a lover

FL gets teleported to another world and now has to act as the Duke's fake lover to fish out the rats that dared to kill someone in his area (it was a prospective fiancee but no feelings)

Gigolo ML meets FL and falls for her. FL's target was ML all along (maybe a yandere, maybe for revenge? I dunno, her dad knows too)

MLs are all demons feeding off a specific human sin. FL is immune to their charming powers and helping(?) ML with having to stomach the sight of blood.

FL in an arranged marriage. They gradually fell for each other but FL is used as the ML's weakness and dies. 2nd life FL is more assertive and chases ML, pretty easy falling for each other. FL intends to take hold of her destiny more securely and not end up as tragic as the 1st life

FL knows how to charm people w/ her sincerity (especially females). wFL loves FL and outright rejects the Welsh (they're all awsholes, crazy, and seems to just want to possess her like an object).