Whatever you do, do not let him go bankrupt or get an IVA while you own a house together as your home is at risk wirh both options.
There are ways of managing his debt that are not bankruptcy or IVA but they will affect his credit rating and potentially hours as well.
I can explain the ins and outs if you are planning to stay.
Have a think about what you want in an ideal world and whether he can give you this and then plan from there.
If you want more advice on debts let me know and I'll do another post.
As a warning debts with people who have depression rarely get better.
My husband (now ex) went from a £500 credit card balance to £25k of debt - the minimum payments swallowed most of his income so I kept the household afloat.
I helped him reduce his payments so he had money for household bills and to help his depression, he couldnt get mainstream credit after that and despite promising no more debt he then used less mainstream ways and was always in unauthorised overdraft.
When we split 3 years ago he had £23k of debt all on tiny payments and within a year he had racked up another £10k because over the years his credit rating had improved so he could get mainstream credit again.
He buys to make himself feel better and because he wants nice things, he has never learnt to budget, he's now in his 40's and I doubt he ever will.
This is your life in the future, why should you be working extra to keep him housed and fed while his money goes on debts.
Why cant he get a weekend job?
You are enabling him to be reckless with money by subsidising him, if he lived on his own he would have to do something about the debt.