Why is it my ex won’t talk to me about anything else bar s*x?

I’m broken and sad and all he ever will fully communicate with me is about s*x.
It’s been months of this soon to be a year and anything meaningful I say he just ignores it and talks about s*x with me.
It really hurts and makes me feel so low just why does he do this?
For someone who says he cares how is that anyway caring?
Why is it my ex won’t talk to me about anything else bar s*x?
Post Opinion