So sorry. I know how you feel as I could have written your post. The fucktwit did the EXACT same thing to me, and I kept quiet to keep the peace. My mistake. I did without and lived a frugal existence (living within our means) while he went out and spent, spent, spent. He won't own up to that, and unfortunately, I am getting stuck with half the debt because it was incurred during the marriage. That's fine if it means ending this fraud of a marriage faster.
I am just now able to actually focus on me and what I want instead of walking on eggshells around him and watching to debt spiral out of control. The fucktwit kept spending even when unemployed!!
I envy that you were able to get him to take the debt, but I truly don't envy your in house separation. We did that "unofficially" for the past year and it sucks. Him moving thousands of miles away was a godsend, and now I don't have to hide away at the office until late at night just to avoid him. I had forgotten how nice it was to actually come home at a reasonable hour and relax.
Hope you get out of your in house separation soon! Hang in there!