How odd, though, OP, to say you've been with him two and a half years and lived together for two before moving out.
In February you'd only recently moved in and at that point you'd only been together for 7 months. I know time flies, but really...
Now, he may well be being sensible as regards his own finances and his debt. But he ran up £10k debt and is often missing his monthly minimum payment. In fact, you had a thread in February concerned that you were being taken advantage of financially by this man, who reappeared after years, turned your head and gave you the impetus to leave your unhappy marriage.
But you moved very quickly in with someone who has two kids living with him half the time.
I'm adding all this in because I think the truth is far more than just you being unhappy about being in that house. It's more far reaching. You've realised the dream you escaped one unhappy relationship for is not the sunny uplands you'd hoped. Reality has dawned, which may be why you've changed details.
I think, taking both your threads - this one and February's - it's time for you to be on your own for a while and find out who you are, before hitching your wagon to another bloke so quickly.