Thankyou everyone. These views are exactly what I hoped for and have helped make things clearer for me.
I certainly don't feel ready to live with someone again just yet, it probably wouldn't be for at least another year as I don't even have a job at the moment so my financial situation would need to drastically improve in order I could be on an equal footing in that respect. We'd have to all move into a bigger house too and I don't feel ready for the stress of house moving again just yet either.
As I said before, I also like the fact he has opportunity to live on his own as he's never experienced that, moving straight from his Mum's in his early Twenties into a very long term live-in relationship. I remember that lovely feeling pre-kids of having your own pad, so I'm happy for him.
My relationship history has to been to move in with my 3 prior boyfriends after six months and er, the same day we met, so I think I'm still getting used to this idea of 'long term dating'.
I do like the idea of conventional living arrangements with a boyfriend, my children's father is totally absent by choice - totally- from birth with the youngest, so if we did ever live together he would probably take on the stepfather role, which is another huge responsibility for him as well as just moving in with someone, so I could see it would be a massive consideration for him, even if he has been a stepfather before (to young teens as opposed to my two under 6 though).
I'm very much in love with him and I hope one day we might all live together as the appeal of a happy family life with him ever after is massive, but this post has made me see that practically, financially and probably emotionally at this point, it isn't feasible.
Which is probably a good thing, better not to jump into living with someone because of circumstance I suppose, and tread water like that.
He is worth waiting for
and it gives me something to look forward in a year or couple of years perhaps.