Sadly if they don't start dating in the first 10 chapters, it usually means they don't date until the very end.
The only exception I can think of is Hitomi-chan wa Hitomishiri which got a long dating arc after the confession.
As for Kubo-san
it really was frustrating watching the series just end right after the confession. Yes there was a cute post-script but it doesn't make up for the loss of what might have been.
I still enjoyed the ride, but I am not someone who can be satisfied solely by a good chase.