Best romance kdramas?

What are the best kdramas with romance you have ever watched? 

the secret life of my secretary , come and hug me , cinderella and the four knight

My Secret Romance

What's wrong with Secretary Kim ?

1. Something In The Rain

2. One Spring Night

3. Just Between Lovers

4. Secret Love Affair

5. A Piece of Your Mind (A Really Underrated one)

- Suspicious Partner

- Melo is My Nature / Be Melodramatic 

- Shopping King Louie

- It's Okay, That's Love

- Queen In Hyun's Man

- Because This is My First Life

- Couple or Trouble

- Chocolate

- 9 End 2 Outs

But then I have a very picky taste for romance I don't really fall for shallow romance stories LOL Most of the popular ones I found it way too "fast food"-ish with not enough depth :)

Please check my Rankings/Ratings of kdramas i've seen. it has some info too of the show's highest rating (cable and free to air tv) and baeksang awards/nominations for easy reference! Thank you!

https://mydramalist.com/list/73DnbaM1