These are dramas with very dark, pathological love where they don't end up together. In spoiler I'll tell you who it is who's obsessed (either the ML, or someone else).
Queen of Tears 2d ML
Cheese in the Trap the ML
Cunning Single Lady 2d ML
Kor Kerd Mai Klai Klai Ter some guy lol
Last Friends her ex. very violent/cruel guy. this drama is hard to watch
Love in Sadness her husband.
Love Is Sweet 2d ML I guess
The Devil Punisher some guy
The King's Woman the ML
The Last Empress I think he's the ML
Summer's Desire (2010) there's also a newer version, but the old one is much better. Both guys are crazy.
