My favorite romantic dramas are:
~ Something in the rain(romance and family drama)
~ Fight for my way(first love and achieving dreams)
~ Crash landing on you(north Korean man and south Korean women fall in love)
~ Descendants of the sun(doctor and soldier fall in love)
~ My love from another star(famous actress falls in love with a man from a different universe/ planet)
~ Uncontrollably fond(first love, cancer, famous male lead falls in love with a girl he knew since high school)
~Weightlifting fairy kim bok joo(university romance)
~ Moon Lovers- Scarlet Heart Ryeo(the girl goes back into time and falls in love with a prince)
~ Healer(night deliverer falls in love with a girl related to his father's past)
I got addicted to all these dramas and I hope that you can enjoy them as well!
Also, the ones I listed in the start are all korean as I watch more korean dramas than other country dramas. But 3 of the chinese/ taiwanese dramas I watched and liked were:
~ Put your head on my shoulder(university romace)
~ A little thing called first love(male lead helps girl in education and they slowly fall in love)
~ Accidentally in love(famous male lead falls in love with a girl living a double life)
I hope you can like these dramas as I fell in love with them while watching them!