SPOILER (MAYBE)
Ch. 79 time skipped 6 months from the confession and it ends with Jaehyuk picking up a passed-out drunk Yeon-oh. I think it will end with them getting together, then I believe she did mention side stories, which I assume will cover them being an actual couple.
It does feel a bit out of left field to end so randomly, but I think it follows the original plan she had from the beginning. At the end of season 1, she mentioned the story would end with 2 seasons and around 70 chapters. It ended up with 3 seasons, and 80 chapters, which is not too many more than originally planned.
so the author wouldn't make some special chapter maybe? :((( that's so sad
guys, i just read right now from a post that the final chapter next week? why? do i agreed??? just kidding (btw this is not the latest chapter) but why is the final sooner? they haven't made a progress to their relationship yet :((( or is it final chapter for s3?????