…that at nearly-35, I still can’t seem to hold a conversation with my father about our relationship and the boundaries that are/aren’t there?

Grrrrrrr.

When I give any indication that a question (or suggestion, or instruction) is out of line, the response seems to be for him to think that I don’t want my parents involved in my life at all. Come on, people! This is not a black-or-white proposition.