@oldfort I agree.
I am saying…the logistics would be just as difficult or more so if the couple was married.
And a lot depends on the relationship, and how long, and how old the folks are. And where they live. In some areas, it’s mighty pricey to have two different places to live. Some young couples want to save that money so they have a good deposit on a different place or a down payment for purchase.
But unless there is some commitment direction…no folks should not live together.
But I think the logistics reason isn’t a good one for saying coulples shouldn’t live together.