If nothing else, it's a good way to test how healthy your relationship is. I already knew the answer before I joined a startup. We were watching Devil Wears Prada and she quipped how whiney the main character's boyfriend was about her career. Relationships really are better when you're doing what you both enjoy. She may not have enjoyed her job, but it set her on the path to the job she wanted.

Now excuse me while I punch myself in the nuts for knowing so much about a chick flick.