Choose to stay with girlfriend and hate your job OR leave your girlfriend for a job you love?

I'm in grad school and next year i have the potential to work anywhere/anyplace. But with the job market so bad, I'm willing to work pretty much anywhere that gives me a decent living. However, whats the point of all the money if you have nobody to share it with. At the same time, being tied down to a girl can also hold you back in the working ladder; meaning that I may get stuck with a job that i hate. I suppose more money would get better girls, but I don't want a shallow relationship. I want a real loving relationship, but that takes too much time to invest. They should be balanced, but this is not a perfect world. I'll have to make this decision next year. Which is better? What would you choose?