What grog said makes sense, but I suspect there's a deeper issue that may related to the way "partner" defines your relationship and commitment.

I'd encourage you to not take what he did personally; it may be as grog said, it may be that he doesn't think you have communication of that sort...but this may be a time to clarify some things in the relationship

He may just be an insensitive male and not guess that you would even think that he might talk about these things with you.