'I think that many posters fail to take into account the negative impact that having a single parent has on the welfare of children. Starting with less resources during childhood, often over-dependence during adolescence from emotional support right through to caring for younger children (obviously this isn’t always the case but more often than not ime), to less support as the parent ages (starting from having greater needs for company during retirement to worry over them being alone as health fails).
This expectation that women should stay single to avoid upsetting their children doesn’t actually take into account their needs. It reeks of prejudice'
It's my prejudice against men that makes me think a new boyfriend shouldn't move in. Through my own experience of domestic violence, perpetrated by a man. Abusive men and paedophiles actively look for single mothers to move in with. Of course NAMALT. But a sufficient amount of them are to cement my decision not to move one of them into my house should DH and I ever separate. It's not just that of course, it's the upheaval - I doubt any child has ever been thrilled at the prospect of a stranger being moved into their house, in a position of authority over them.
So yes if the situation ever arises, I will take my children's needs into account over my own. Mine will come second, as they often do, because that's what being a parent is about. Besides, no one needs to have a man living with them. You can have a perfectly fulfilling relationship living apart.
I can't speak for double standards, or what DH would do, because I don't know. I wouldn't like him to move a girlfriend in and would object but if he were to marry again then I suppose I'd have to make my peace with it.