Someone please run this mf over (Sadly I know how it ends)

How does it end

(I don't remember too well but) Basically the blonde leaves and goes on a trip I belive when he comes back he has dinner with I think the older brother of the annoying purple haired guy. During this dinner he talks about his little brother and how right now he isn't doing so well (it was in chinese so I couldn't really understand much) anyway blonde guy goes back and they get back together with purple guy being like this is who I am but I really love you