Saeguk romance

 a king was in relationship with former noble woman, break it off to marry another woman from big family, the ex lover didn't know her former lover is a king but eventually got threatened to marry the king by a councillor who want to control the king. It was good when he finds out the concubine he hated (for her boldness and sharp word) was actually his past lover, because he refused to sleep or even see her face when he married her and only went to her palace room just to divorce her.

The cinematography in this drama is top notch and new Hong sister drama with Kim Seonho and Go Younjung is currently directed by the same female director.