@Short_Circut
I’d say it’s more of a de facto relationship at this point. While not stated, everyone seems to assume it and the two in question never deny it and continue to do couple like things.
It kinda looks like they've just slid into being a couple without actually talking about it past that weird initial mutual confession in front of dog-kun, then what Sawarida said after their last talk with future seeing chick. I mean, they're both acting more like a couple now, but I bet if someone asked them they'd still say not yet cause they're idiots