Why won't he give me a key to his apartment?

Okay so me and my man have been dating off and on for 3years now! and we are even talking about getting engaged and serious thing like that we love each other to death! The only thing is is I'm always at his place like its "ours" I have things there, but the thing IS he STILL hasn't given me a freaking KEY! am I over reacting! I mean it's NOT like I'm going to become some crazed chick if I have access to his place! I just told him "u know if I had a key to your place I could be there when ur home start dinner etc.." of said it costs money..WHATEVER I'd like some opinions on this I KNOW that a key doesn't define our love tho
Why won't he give me a key to his apartment?
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