relapsed after 2.5 yrs.

I (39man) had been clean for 2.5 years and just got kicked out of the house by my fiance (48woman). We have been steady and good for 6 years this year. Other than the being ditched behind all but 2 Christmas seasons since we started together, I just got clean again after 6 months of slipping back into the scene. I did not intend to get back into it as heavily as I had before. But I just told my fiance after 2 months of being kicked out and ordered not to come back until I got back on my meds for mental health, due to drug use mainly. But I also got kicked out over a completely different issue than drugs. I had a meltdown that got me removed. But although, your partner is supposed to show you their support and their love by fighting through it with you and lifting you up in the process as well. Am I wrong? So she condemns me over a slip back, which only the last 2 months of it were bad. I just finally came clean To her yesterday. Christmas is ruined and nobody is happy. What can I do?