How do I get my boyfriend to boink me?

I get turned down way too much. It hurts when I get rejected and it sucks because I'm still so horny (I have to wait for him to fall asleep before I can take care of myself). We have been together almost 4 years and I've only turned him down once the whole time. He turns me down all the time though, and I'm finding the rejection is getting to me. I make it all about him too, he just has to lie there! I'm sweet, I blow him, I do everything. I want it about 3-4 times a week and he says I am just a sex freak. I think its normal, but he keeps turning me down. (we do it about 1-2 a week) What do I do?
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