I currently have two non-neutered males. They are in seperate 2x4 C&C cages because of fighting. (Yes blood was drawn more than once so let's not get into that again!) Our neighbor had two females, but one passed away a few months ago. My wife found out that although he does take really good care of the remaining girl, he really doesn't want her anymore. So I have the following questions now:
1) Assuming she is fixed because mine aren't, would it be a good idea for me to take her in and put her with one of the boys? (We don't have room for a third cage)
2) If she's not fixed, should I get her fixed so that I could take her in?
3) Do males and females typically get along better than male-male or female-female pairs?
Depending on your answers, I might have a few more questions. Again, I just want to emphasize that I DO NOT want any type of hanky-panky going on between the males and the female. And the neighbor takes really good care of her. He just made the comment that he does not want another pig (so she will stay alone) and when she is gone he will not get anymore. If I could take her in to provide her with a good home and some guinea pig companionship, I would like to do that.
Oh and one last question. If this did all shake out and it looked like it would be good for all pigs involved...anyone have any good ideas on convincing my wife to let me?

She must have already seen the gears in my head turning because she told me about the neighbor's pig and immediately followed with "DON'T get any crazy ideas!!"