Hey there,
are there any drama with a plot like that or a similiar one:
Girl falls for a guy, who turns out to be a fuckboy and who has many (or one) other woman, he is dating? And now the girl has to deal with a feelings to that guy?
I don't know if it's what you're looking for but Witch's Love reminds me of what you said, even tho the guy is not the male lead
https://kisskh.at/26848-por-pla-lai
https://kisskh.at/9943-jao-sao-rim-tang
The French classic Dangerous Liaisons has a similar plot . There are three Asian versions available:
https://kisskh.at/2404-untold-scandal
https://kisskh.at/5575-dangerous-liaisons
https://kisskh.at/26230-love-game-the-great-seduction
lmaoooo at the title