Alpha Game has a post on nagging.
There's no question it poisons a marriage. Just yesterday, I saw a woman nagging her boyfriend in the supermarket. They were likely in their early 20s. The guy was replying in a disgusting, appeasing manner but she just wouldn't stop berating him. I was in their proximity for a mere twenty seconds and I wanted out!
Why do guys put up with such crap? Aren't these people interested in being partners instead of having a mother-child relationship?
To me, it's one of the things that's non-negotiable in a girlfriend or a wife: read the title of the post.