I thought it was weird that he says "Knowing you are a Human", like the whole "Cat" thing was a misunderstanding. No, it turns out the that whole bit was altered. It's actually something like
"It's not like I've been treating the human form as a cat from the beginning!!
I did tell you to stay in your cat form!"
As in "You've been a cat, so I treated you like one. I kept treating you like one, and even told you to stay like one so I can keep doing it!" Which tracks, because the cat treatment largely (If not entirely) stopped when she turned Human.
Take it slow, girl, and he'll come around in time.
Also, she didn't accuse him of wanting to live with her, or invite him to do that; more that he'd do it at all, since she was worried he'd leave her.