It's so easy to make friends, and it's so easy to lost them, because of a lack of communication...
It's nice to see a chapter tackling that subject.
I agree with your sentiment but that is not at all what happened here. But it
would've been an interesting subject to tackle if it happened organically, true.
DISCLAIMER: I love how the manga has been the past ~10 chapters. Really sweet and enjoyable. This chapter just was poorly done and completely forced.
Chapter 16 and 17 had them HEAVILY bonding and talking a whole lot, even trivial stuff like scores or studying together or important stuff like at the sportsfest. It was clearly shown that she now seeks him out, too and that he gained more of a backbone and initiated with her.
Now, randomly, neither of them talk to each other for multiple weeks.. huh? That is 10 chapters skipped !IN 3 PANELS! and both MCs regressing to pre chapter 16+17. Don't get me wrong, it was solved instantly and I like how it ended up!! But it feels 100% out of character (as just shortly before established at that time), out of place and forced. Almost like chapter 3.. Just a minor hiccup, tho.
Again, just saying that the message was interesting but the execution was terrible, sadly.