A lot of us tend to do this naturally when a relationship is reaching its tipping point, and it's just as effective here as it was any other time. Remember: there is nothing too petty, too insignificant to start a fight about. It's all up for grabs. The way she combs her hair, the fact that she left the cap off the toothpaste, or the way she eats her peas one at a time. One at a time, the nerve! Eventually she'll get fed up with your constant bickering and drop you like a pile of hot garbage.