As the heartless pragmatists that I am, I think it's a good idea not to move one's emotionally dependent, oft depressed, unemployed bf into one's home, especially when that would necessitate some financial dependence. But, maybe that's why I'm still single. If it makes her happy, is it a bad idea? I suppose time will tell. But that's the problem with 20/20 hindsight, it accounts for info you couldn't possibly have had at the time. Within reason, are there REALLY any bad decisions when it comes to pursuing love?
And clearly the stakes have changed. Maybe it's "better" for him to move in with her, than for her to move out of his life...