Really? I think this story that started with Dobin being hired as a secretary to secretly be Tae-oh's pheromone therapist by having sex with Tae-oh, cuz Tae-oh had problems with pheromones in general did go somewhere. And it's still going somewhere.
S1 was all this therapy thing
S2 was both of them getting closer
S3 is now Tae-oh being able live with pheromones
Don't worry, in ch74 Dobin will do Dobin stuff

Man Dobin is just so friggin cute and fluffy. But this story really feels like it's not going anywhere.