Touko and Yuu love each other, Touko doesn't love Sayaka, those are the facts, from the first chapter it's obvious it will end with Touko and Yuu together.
But still, this chapter succeeded in instilling a sliver of doubt in me, if atleast I didn't hate Sayaka's character (although I'm sure she'll get her redemption, as most third wheels do), it would be more bearable.
Why do so many romances need a third wheel to "help" the main couple get together, especially the "old friend that never dared to confess their feelings" type, those are the worst in my opinion.
Anyway, if the manga was over, I'm sure this chapter wouldn't have left me such a bitter taste. Really hope the anime gets a sequel.