I think it’s reasonable not to confess in terms of the story plot, there’s still Mami and part of the Ruka plot remains unsolved at this moment. However, author is still a bitch for dragging the Mami plot for almost 100 chapters.
FINALLY, A CONFESSION. Disappointing ending though. What the fuck is the author even thinking? I'd have laughed it off if this was early chapters, but after so long with little development...?