I just finished reading this start to finish (prompted by the new chapter release), and I am quite honestly SHOCKED that this work does not have the idiot couple tag. Obviously, they are now a real couple and I missed the first part of the series while it was updating, so I don't know, but... is there a reason why this doesn't have the idiot couple tag?
I have seen a lot of characters exhibit startling cluelessness about their mutual feelings for each other, but "we are friends who passionately kiss each other every week but it's just a one-sided love" is a whole different level of idiocy if you ask me.
(I apologize if this has already been addressed earlier in the comments)