i am sorry you are in that boat. i dont have much advice to give, but as i am learning at this very moment, you must follow your heart. if you feel the relationship is healthy, do whatever it takes to keep her by your side... you have your whole life ahead of you! i hope this helps even slightly. but like i said, i have little room to talk about relationships. Best of Luck!! =)
PM if you need to,
Mu$ik