One is a friend. The other an acquaintance.
I have/had friends whose pickiness/slovenliness was fine until we tried to live together, and then all that became a personality clash. It's entirely possible to have strong friendships with people you couldn't live with.
If my friends fell on hard times, they’d have a place to crash. I cannot say that of everyone I hang out with because not all of them are people whom I’d (a) enjoy being around and (b) trust to respect my boundaries (and trust myself to be tolerant of their incongruities with my preferences).
If someone is doing that while living with someone whom it’s bothering to the point of wanting to change living situations, there is a disconnect of empathy that betrays that it isn’t a friendship.
(Granted, my original comment was honing in on the “few hours a month” bit. That’s fine for maintaining a friendship. But not for building one. Again, it’s perfectly adequate for making acquaintances.)