Any manhwa where the fl ends up with the antagonist

I reccomend "I'm the Ex-Girlfriend of a Soldier". I hope this answered your question.

https://www.mangago.zone/read-manga/i_m_the_ex_girlfriend_of_a_soldier/

The Villainess Wants to Enjoy a Carefree Married Life in a Former Enemy Country in Her Seventh Loop!

https://www.mangago.zone/read-manga/the_precious_sister_of_the_villainous_grand_duke/ (probably?)
https://www.mangago.zone/read-manga/the_villain_discovered_my_identity/
https://www.mangago.zone/read-manga/i_tamed_a_tyrant_and_ran_away/
https://www.mangago.zone/read-manga/villainess_maker_1/