I love this dynamic I often see in other media. Where the two leads are together but not really and those around them realize they are in love wih each other long before they do. Just j and k dramas. Please and thank you

Mary stayed out all night

also ´´full house´´, but I've only watched the thai one and you said only j or k. They say that's the best one though, and I do agree it's really good but I haven't seen the others so I can't compare. There are 2 korean ones but not many seem to like the 2012 one (also not the hair which I agree on watching the trailer, my god lol). But I think the 2004 one is ok.
Smiling Pasta, such a cute bickering couple (Little Turtle+Jinx=Cute Couple)
K-drama Alone in Love will fit your description :)