Looking for a korean romcom

Hi, I really want to watch something that:

• is possibly Korean 

• is a romcom 

• the ML falls in love first BUT he's not  cold, arrogant, he's a good guy... someone you'll fall in love with

• the FL doesn't fall in love too late, something just right 

Pls I can't watch it if it's medical or there's a love triangle (if it doesn't make you suffer from 2nd lead syndrome it's ok but I'd like to avoid love triangles...)

Thanks in advance♡♡♡

Korean romcoms where the ML falls first, is a likeable person (in some cases he might be arrogant or cold in the first episode or two, but that's it), and there's no SLS:

• Weightlifting Fairy Kim Bok Joo
• Splash Splash LOVE
• School 2017
• My Secret Romance
• Something About 1 Percent - there are three very minor possible alternatives to the ML, but none are presented as serious candidates and they get minimal screen time / plot attention.
• My Only Love Song
• I Need Romance 3 - there is a SML but no SLS

Same as above, but a mix of romcom and action / melo:

• Crash Landing on You
• Healer
• I Hear Your Voice - there is a SML but no SLS
• The Tale of Nokdu - there is a SML but no SLS

I see you've already watched Bong Soon and Put your head on my shoulder. So I suggest

The Romance of Tiger and Rose - Chinese historical drama where the hero is cold to others but falls deeply for the FL. He's adorable. There is a SML but no real SLS (atleast for me) 

Don't hesitate thinking it'll be a long serious historical. It's only 24 eps, fast paced and funny. 

Thank you all ♡♡♡