I think most people wanted Jk to tell Dan to stay but I can say that Jk felt too much guilt over the fact that Dan almost died bc of that match, so even if Jk loves him now and wanted him to stay after the match, he can't say it 'cause he's afraid of hurting Dan again. Both of them need time to think about each other, cause Dan need to feel the absence of JK to realize he still loves him
I think jaemin is trying a strategy where he fake feelings for seungpyo to make him lost places in the school's ranking. but I hope that in the process he'll fall in love for real