Often secondary couples have more interesting, realistic and hot romance than main couple, very good example is Giant where secondary couple (technically FL and anti hero) have so amazing and emotional romance...
Main couple usually have some frames, are less taboo/clieche free and less realistic but if there is really good secondary romance, with enough screen time and good/beautiful actors, they might have really great, emotional, passionate, realistic romance and also realistic (not so perfect) characters...
I mean these kind of romances are not usual-100 times seen fluffy cliche love stories, also not so predictable - I want that kind romance ))
so please recommend me romances like that ^^
what I have seen and think are good examples:
Giant (N1)
A Man's Story quite same vibe drama and also anti hero-FL romance, quite good
Arthdal Chronicles (though there are multiple leads, so Tagon & Taealha are also leads)
Girls' Generation 1979 (SFL had great love story)
Eternal Love that romance even had spin off drama, where they are main couple
Angry Mom - (FL and one boy, though it didn't become romance, I watched drama because of it, was soo sweet and funny and he was so adorable )))
