Aimee,
I am right there with you. My fiance (I call him that even now that I took off the ring) will leave tomorrow. He has been detoxing cold turkey since Friday, well maybe he has, I think he has been sneaking a little in, but mostly he has been sober and miserable.
Last night I got sucked into the arguement. I cried myself to sleep and woke up still crying.
Mine too shows symptoms that mimic mental illness, and here at my lowest, I feel like I am losing my own sanity. Good luck, I hope you find some peace in his absence and that the staff there will give him the guidance that he needs.
You are definately not alone.