@lasquiti89,
I think that your boyfriend is smart. People change when they move in together, it's no longer "his" home, it's "yours". The way he likes the house changes as you move things around and take your claim to spots of the house. His habits change as there is time slots set into place ie) dinner on the table. Lots of things. At 10 months there is no rush to live together.
If you want my honest opinion, you love having a place to call your own and are more comfortable living away from home than at home. You stated yourself you won't feel guilty if you moved in with him and not paid rent to your parents that actually need that support at present, that supported you when your finances were bad.
It's entirely up to you what you make of it, staying over. It should still be fun, happy. You're dwelling on him thinking of his past and you dont' accept that, as far as you are concerned you and the ex are two different people. Yes, you are. But, a bad taste in your mouth doesn't go away that fast.
This is a good test for the both of you, forget the ex, she's not the issue it's the way he was made to feel living in his own home. So, what are you going to do about that? Make his stay within his own home happy? And, yourself whilst you are at it? That is what compatibility is about and therefore, being able to live together.