The story begins

So.. Im 26 years old... ive been doing H for 8 years now. At first it was just on the weekends, and so on and so on.. my girlfriend does it, which she never used to before thanks too me... I snort the H.. Now heres where it gets difficult... Im done.. im sic as hell right now, and im sweating it out, im popping perks and immodiums like crazy, and im in my 72 hour peak.. Ive decided i no longer want to be doing this to myself, i never want to feel like this agan, and its time to get my life together and get out of debt.

So here is the question.. ive told my girl that i dont want to do this, and asked her if she will stop with me... she told me she'd think about it. I came to her 2 days later, and her answer was that I might be ready to stop, but shes not.. and just because I want to doesnt mean she has to too. I dont know how easy it will be, being with her and not doing it if its right infront of my face all the time. I also feel bad because if it wasnt for me she wouldnt be into it. But then again with her friends it would only have been a matter of time anyway.

I really dont want to split with her over this but i have a feeling its the only way to surely stay clean. I dont accosiate with anyone else that does H.
The other issue is that if i split with her, and she gets worse i think i will feel like its my fault, and if im with her, at least I will be able to monitor what she is doing... Ive already started to notice her personality changing for the worse.. dishonesty, stealing, etc...

im confused and dont know what to do.. or maybe i do know what to do, but i dont want to do it.... does anyone know what im saying??