You know, I tried that with my husband many times. He completely scoffs at it. For example, we were drowning in credit card debt --- simply because we weren't making enough money and were doing a lot of our living off credit cards ( I know, dumb dumb dumb!) Well, I found credit card calculators online and figured each card and how long it would take to pay if we paid a certain amount each month. It came out to 3 to 5 years. I told him with complete enthusiasm that we can finally make a plan and get the cards out of the way! His response? Pffft.... yeah, 3 to 5 years, ha. He did the same thing when I said I was going to quit smoking (which I did 9 years ago). Pffft, yeah right. A total negative.
We have many other issues other than money. The only reason I haven't put him out yet is because he wouldn't be able to afford to live on his own and I don't want to put him in a position of having to rent a room (which he couldn't afford, anyway) or having to live with relatives.
You bring up another excellent point though.....that for the OP, like it was for you awhile....that it's an income crisis.
It sounds like you are moving in a really positive direction...and ready to move on. My concern for you, if you're really ready to move on, is will he ever be in a position to support himself?
We had a very similar situation with my DH's brother....and the marriage just ended with a divorce a few months back. She, my former SIL, was moving in a positive direction. Not only got her nursing degree, but her masters....now making in the 90,000 K range on her own, but he just stayed where he was....never tried to improve, save....on any front really. And yes, they had many other issues, and always had separate checking accounts....that kind of thing.
But if my SIL waited for my BIL to move out on his own, or get his financial act together enough before she left.....she never would have left. She left him in the house....that is about to go into foreclosure at any moment. And he's since asked his 80 year old parents to buy him a house that he would then "rent" from them. My DH had to finally step in and speak with him.
It sounds like you're still looking out for him....but my only thought to you, as another woman, is you need to think about yourself.
Hope it works out for you.....