I'm going to break up with my gf over the fact that I have a 3 hour drive just to see her.
Can you think of another solution to the distance issue besides terminating the relationship?
I just can't take the commute any longer.
Having a long commute to get to your girlfriend can be a little trivial to break up over. Long distance is hard, I know, but your relationship can really flourish if you work these problems out. Have you thought about moving close to her?
She wouldn't make the move for me so why would I do it for her?
Have you even discussed this with her? You shouldn't just assume she wouldn't move to be closer to you. You both have jobs, so that is an issue, but not one that you couldn't sit down, discuss, and come up the a creative solution.