"...because I had put it on mute. Anyway, senpai and I are getting married now."
That's exactly the kind of delusions real people have, then do stupid things like declare in front of a crowd to force her for a response. That "romantic" feeling in truth is just an egoistic selfish action to earn what he wants, not considering what she may feel like. Fiction or not, be smart.
And that night Senpai is actually with that white hair guy in her class because otaku-kun is too baka.
Updated
However...
Even after the next morning came, my cell phone never made a sound...Between my anticipation and worries, I didn't get much sleep that night.
I just waited for a reply while reminiscing on memories of Senpai...