Because he is still waiting to be sure that the relationship is as solid as he wants it to be before making that decision. In my opinion, people should date at least a year before moving in with one another. Especially if part of the decision as to why he should move in is financial (i.e. saves you money).
I would not push the issue, or you will push him away (this from a male)…
I refused to move in with any girlfriend when I was younger, even though I spent a lot of time at my girlfriends’ places. I didn’t want to play house, I wanted to sleep in my own bed with my own things from time-to-time, and it was good for us all to take breaks from time to time without feeling smothered…
I tell this to all women… and I don’t know you or your situation, so don’t be offended if it doesn’t apply to you, but if you are having a lot of sex, back off of it and spend time with each other outside of the bedroom for a while. When you do have sex, make it spectacular, but back off of the frequency until you are certain that he is in it for you and not the sex. Many women are surprised at the answer: when the sex slows, he goes.
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