Long distance relationships?

My girlfriend and I met in Philadelphia while she was finishing up her masters program. She graduated in May of 2010 and started working January of this year in Boston. I stayed behind to finish my schooling as well. Now I am done school, still working full time and have no idea when I'll see her again. Yes, we can plan weekends together but that will cost a lot to fly out each time. I have been trying to find a job in Boston since I've graduated but have had no luck in the business field. I also have an option to move out of my house here in Philadelphia but that will put uncertainty on my relationship even more. There is also uncertainty as to obtaining a job and ultimately not liking it or something in the relationship may go wrong as well and I'll be left with nowhere to go. I can't just pick up and go to Boston without a job even though with her working and my savings I could make it for a little while, while I aggressively look for a job with my own car and not online. Any help in this matter would be greatly appreciated.