Responses
Personally, I think talking will just make Eunwoo fall (deeper) for Taeho, I can't really explain how but I've been in the same position and talking just made me realize that I actually liked someone that I have been denying having feelings for. So tbh I think I get why he chose to have sex on impulse as an escape.
This is just my opinion based on my personal experience tho, idek what the author's planning

We need to stop using sex as a way to solve everything, CANT THEY JUST TALK
(Not saying I didn’t like the sex, but again^)