I have an opportunity to foster 2 boys for an indefinite time or adopt a neutered male. I have 4 girls who are sisters and they've been with me for about 3 months. I don't know what to do? Of course, I want to love them all, but would it be difficult to introduce a new adult male to my girls? Would it be difficult? Would having a pair of boys kept separately but in the same room be something I'd regret? I don't know. Opinion?