Corri:
He communicates on a level with my 5 year old.

What...does he use up all his intelligence at his job every day and then come home and regress into THAT, just for you?

I see a war going on at your house. He is not interested in anything you have to say, unless it is "I want to have more sex with you".
I know this stance cause I've adopted it a time or fifty.
It seems as if you are both holding out on what the other really wants and needs. You are approaching him, wanting to break the gridlock and he is digging in deeper. Why? Because he wants it to change, but he wants only YOU to change while he stays exactly the same--perfect.

What has his response been to the concept of meeting YOUR needs and having quality conversations? Too busy? Stressed?

I think he needs to revisit the concept of marriage being a two way street.

Hugs to you my friend!