@Haru if you cannot notice for 15 years that your firend has feelings for you or suffering then you are really dense or selfish. He obviously knows something but instead of asking, he plays games. He forced his presence on Mc for a month without asking, after Mc very clearly put distance between them by moving away. He didn't tell his supposed best friend that he is going to get married. He is being secretive and wishy-washy about Gisele and the marriage while acting like this is some fun vacation. If he really doesn't know anything, then it's the creator making it seem like he knows something to confuse the readers because he is definitely acting suspicious. It's unfair to Gisele and Mc. These are the things he did wrong in my opinion.