Hello S:
It takes a strong couple to withstand one partner using drugs and the other not... Your relationship is doomed.
Don't feel bad. It ain't your fault. Unless of course, you're like my ex, who smoked with me for 20 years, and then out of the blue, decided it was evil weed, and nagged at me every time I smoked. If you're like that, it IS your fault.
excon