You wife gives you quests?
Mine doesn't who do you have to marry to get quests off them?
there are a few that are quest givers that you can marry, best example, finishing the Companions Quest line. the huntress gives quests and can be married.
Divorce would be good. I grew tired of one of them as well, at first they were nice but their consistent statements made it annoying, like someone nagging you the whole trip.