Heading toward affair- what to do?

[hopeOK]

I was texting H to tell him about a major traffic problem on my way to the market. He said this-
If I thought the way that you do I'd just assume that you were doing something that you want to hide.

I said-
except I have the transparency thing going. Not trying to hide anything.

Then he said-
Right. Like your little deal last night. You somehow think you know something about something so you start asking weird questions designed to scare me or put me on the defensive. Which it does. And then I get very angry.
Transparency at work.

Seems like he is fishing for what I know. STFU on my part or say- I know what I know & it is not acceptable to me.