Dramas where the Queen/Princess(FL) Loves Another Man(ML)

So the FL is in a relationship with the King/Crowned Prince or will be in the future (due to marriage) then she meets another guy(ML) and falls in love with him. 

Here's an example of an upcoming Chinese Drama. https://mydramalist.com/31928-held-in-the-lonely-castle 

Here's an example of a  Korean Movie: https://mydramalist.com/12214-the-magician 

It can be either be a Korean Drama or a Chinese Drama.  

The King in Love (2017): FL is from a noble family. I didn't like the ending at all. 

Flower Crew: Joseon Marriage Agency: FL is a commoner but the king wants her as his queen.

 Jacob Frye:

Thanks, I will check it out.  Do you know of any dramas with the same theme?

If you like to watch a story about a queen, or princess, who must be a dutiful wife to her royal (intended) husband, but chooses her heart in stead,  I know another movie with the same theme:  A Frozen Flower, here the queen falls in love with a loyal general of her homosexual husband. Very mature movie BTW.

I can't find any drama with exactly the same theme, only three series partly fitting the bill:  

The Princess' Man is about a princess whose father wants to be king, but she falls in love with the son of her father's mortal enemy

In Ja Myung Go a crown princess is blinded by love for a prince who conquers not only her heart, but also her country. The prince's real love is her sister, but this sister fights him until the end.

Empress Ki is a real classic about warrior woman Ki who is loved by the king of Goryeo, and she loves him back, but she ends up as one of the war prize women for the powerful Mongol emperor who finally makes her his empress. 

 @Apple Eye  All of them look promising. I have  Empress Ki on my PTW, and I'll add the others to the list as well. 

 Thousand_Paper_Cranes:

Lah Ruk Sut Kob Fah (2014)- She's engaged to crown prince... not a princess before, but from a powerful family (sorry)... might be your cup of tea

The Magician- have not watched but fits

Also The Crown Princess- does not fit your trope at all but someone in line to the throne falling in love with a 'commoner', great series though!

Thanks, but I'm only looking for Korean, and Chinese Dramas. I'll check out The Magician as well.