I have watched this show several times because this is my go to series when I don't know what to watch. I really don't care about the other couples because I find them boring, but our main couple is where it's at.
They start from strangers to doctor patient to friends to lovers gradually and it just seems so natural. You can see when the gear shifts smoothly and the ML is now actively wooing the FL, and she is enjoying the ride.
Like I said, I skip parts about the other couples. I also find how the girls keep complaining about how old they are utterly ridiculous. I mean, 27??? OLD??? Girls you haven't even lived!
But anyway, it is worth watching if only for the main couple.