So it seems that in Fable 3, if you make a decision that is good yet unpopular (Such as the Sewer Plant or Outpost) you're husband or wife will die if they live in the castle. Initially I just thought that the citizens, in there upset killed my husband. My fabulously dressed husband. Apparently it's a glitch.
You can just restart the game and move your spouse, but there's a chance that you'll encounter a different glitch where you will no longer be able too interact with them. So I just moved my spouse back to the castle and had him die.
I'm very upset, I finally found a guy in the game who I could marry and didn't look like a Balverine's love child... and he had the choice to die or be mute. Well, he didn't have a choice, I chose for him. In any case, I'll miss that fabulous mustache... I don't remember his name, just his mustache and clothes.