Antonio,
First off, you should be very proud and happy about your job opportunity, five years of searching for anything and not giving up is an accomplishment in itself. I do not know your girlfriend, she could be the best person in the world or your true love. But from what you have written, she, not you, is being selfish. If you two are meant to be, you guys will survive; maybe she will relocate, who knows. Funny enough I am rereading one of my favorite books The Alchemist (you should read it if you haven’t already), it is about the journey to fufill our “personal legend” aka our purpose, destiny. Your story reminds me of a line in the book. Good luck to you, and don’t let anyone dictate what your journey is.

“Love never keeps a man from pursuing his personal legend. If he abandons that pursuit, it’s because it wasn’t true love.”-The Alchemist