Akashi Natsume's feed

I feel like soo-young is dense and blinded at the same time. I mean he didn't even try to learn why his friend became like that to him and distance himself. And he's so blinded to see what really kind of man taehwan is. Wasn't there a part on previous chapter that one of his friends was it gave him advice or warning about taehwan? I can't wait to see the moment where he realize his stupid enought not to notice what's really going on.