That open shove could well have been AA: at that level it may well get called enough to be a solid move -even if it's not a solid move it doesn't mean he's going to shove any top pair.


Flop is obviously shit, but he doesn't shove. That tells me he folds to a raise. Standard raise based on my reason for calling pre flop. He calls. I'm super confident now that he's drawing, and diamonds appear to be all he can reasonably have.
He didn't fold.
When you "know" he will do something and he doesn't alarm bells should ring! At this point he could have almost anything.

Unless you know more about your note than it says you're giving it far too much weight.