I think it’s more that he knows what sex is but doesn’t know HOW to do sex? Like… his question wasn’t “how do you have sex?” It was like “what is sex?” Like he knows people rave about how good it is (no clue where he learned that) and the feelings they have about it (insanely good, etc) but he didn’t know how it worked. He hasn’t experienced the feelings (which is evident by the fact that, even after making out and stuff, he wasn’t turned on until he got the actual stimulation).
Yes, but notice that he "knew" that sex is with someone you like like. This is what they call instinct?
Maybe! We don’t even know how he knows what sex is / who he heard it from; I was just adding on my two cents
I think there is more to "liking" Guwon. On the one hand, he doesn't understand what sex is all about and why it is so important to people, and on the other hand, when the teacher asks him if he is sure he wants to have sex with him, he replies "you really don't realize how much I like you." As if he understood what feelings go with the sexual act, but he hid it. I don't know what to think about it.