Intimacy and Depression

So I have been soul searching lately. Trying to figure out the many causes of my depression.
I think that intimacy has a great deal to do with it, or lack there of.

Genuine intimacy in human relationships requires dialogue, transparency, vulnerability and reciprocity. As a verb "intimate" means "to state or make known".
Much of this is lacking in my personal relationship.

Now don't make the mistake and confuse intimacy for sex.... My partner likes to do that!

Intimacy is a fundamental human need. One in which I still continue to need.

I try to compare how the lack of intimacy makes me feel. I feel like I am an orphan. Left all alone in my crib with no one to hold me or talk to me all day long. Eventually, the child will shut down. That's where I feel I am at. Shut down mode.

This is the biggest aspect of what makes me feel sad and depressed.

I need to work on this and find a way to get this aspect of my relationship functioning the way it should. My partner is very closed off and hard to reach.