Not ALL of these are dramatic,but they all have a good romance.
I would second Eternal Love(Ten Miles of Peach Blossoms) ,and add Memory lost. I recently finished that and enjoyed the main couples relationship very much. It also has some cute and funny interactions with the other characters, as well as some crime solving and action,if that is your thing.
Splash splash Love, The Eternal Love,and My only Love Song- all time travel romances worth watching, The Eternal Love is also a body swap,and has a season 2 coming yay
Love Me If You Dare- a dark crime drama with a side of romance. Well written, with an awkward male lead and the female lead suits him perfectly.
Mars- another dark drama with some suspense and serious subject matters.
Orange Days- sweet otp, emotional and touching love story
Bromance- cute and funny,with a very good looking male lead and hot kissing scenes.
School 2017- I'm not big on school dramas,but this one was couple goals
Also second Weightlifting fairy Kim Bok Joo. This was sooo adorable. Cotton candy fluff and barely any annoying second lead stuff. Enjoyable from start to finish