Responses

It's possible, but from my understanding of Korean, they were asking something along the lines of "when did you start to like...." (I can't load the page with the raws to finish the sentence accurately lol).
Yubin's answer was something mentioning middle school (중학교), which is when he actually started to like Ginu, right? So it lines up.
Either way, I am 100% certain of what goes down in chapter 36 lol
Yubin says "사랑한다고 말해" which means "tell me you love me". And Ginu replies "I love you" in some form.
SPOILER
Chapter 34(?) they are sitting in a bath tub, asking each other when they first started to like each other.
Chapter 36(?) is the emotional sex scene with Yubin: "Tell me you love me" Ginu: "I love you". This also marks the end of the season until next time.