Well there is no smut in most of the chinese novels/manhua either but chinese bl authors make sure that we know who is who. so it could be the case here too.
Though i actually do not enjoy that much the tendency to heternormolise gay couples (like fr, just yesterday for some reason we started to discuss gay ppl at work and one of the colleagues said"well there is always a "girl" and "a man" in such relationships", and i was like wtf why would you think so, why always?), i prefer when they open to explore instead of fixed positions.
But thanks for letting me know. if thats the case i can imagine whatever i want

But has Taehee dated before our MC or does he have alot of experience?? Because I'm not too fond of that trope where the Top has slept around alot but the Bottom is naive, pure, and has no experience?