Can anyone recommend any toxic romance relationship (straight/hetero), movie or series, preferably Korean? 

Toxic defines as:

  • overly jealous or possessive protagonist
  • manipulative or abusive protagonist (to his partner)

Thanks

If you don't mind BL Secret Relationships would count. Otherwise I'd say Boys over Flowers, at least for the first half.

 emeraldarrows:

If you don't mind BL Secret Relationships would count. Otherwise I'd say Boys over Flowers, at least for the first half.

Thanks :) I don't, though I'm currently looking for straight dramas :)