I have RTFT because I find myself in an incredibly similar situation. I seem to have unwittingly adopted a man (thankfully no kids) and have been absorbing the financial stress of his situation, despite definitely not having signed up for this... I am desperately trying to jolly him out the door by the end of this month (hence the username).
I hadn't commented as far wiser PP had everything covered, and until I get him out the door I don't feel qualified. However, I saw his "that’s not the kind of relationship I want, I want to be with someone where we share everything" and BINGO. Mine has said EXACTLY the same thing.
For context, I am a nearly 40 YO single woman with her own flat, job, savings, etc., and he is a 40+ man with a lower-paid job, significant debt, who was effectively on the verge of returning home to his parents' basement. He doesn't have anything to share with me.
Mine is also sexy, charming, good looking, funny, etc., but I am at the end of my rope feeling responsible for everything, being the de facto housing provider, problem solver, ideas factory, house manager, not to mention the bloody bank.
I thought it might help you to know that even now, other people are going through what you are going through and hearing exactly the same bullshit platitudes. Stay strong and keep an image in your mid's eye of your home as your sanctuary.
Sending 💐