I think the reason this works with them dragging their feet on this relationship thing, is because it's literally scripted into the universe that they'll become a couple by virtue of everyone pairing up around them as well.
And, they do have great interactions with one another that are predicated on their Childhood Friends status, and that carries its weight within the narrative.
Hopefully it won't be dragged for some 300 chapters this way with zero progress between them (and only them), but as-is, the current state of things really isn't all that bad.
Will be awesome to see who confesses to whom, though.
Thanks for the TL work as always.