Depends on how you want to classify it. Haruka gets along well with Montana. He pats her with his tail, and she pats it back sort of thing. At this point of the translated web novel, nothing overt has happened yet between them, but they do enjoy each other's company. Albert was recently claimed vocally in the most unromantic way I've ever seen, so the author isn't dead on the topic, just slow to get to it.
As of 1800+ chapters from the web novel neither Montana nor Haruka ever get into a romantic relationship, let alone with each other.