Well, the resolution is a long way off. But they'll pick up clues along the way that hopefully they'll eventually be able to fit into some larger pattern.

It is definitely for the best that Harry interrupted Draco, though I can't tell you why yet.

Harry thinks asking Draco the question would force him into unwanted intimacy. Really, he is being a little too sensitive to Draco's feelings here.

But Draco won't push forwards, either, because he feels like he tried and then Harry shot him down. And so Harry will have to be the one to lose his temper and demand the truth, that things change.

Harry thinks that class and wealth are a barrier to his being with Draco, and not one he can easily dismiss. He thinks Draco would expect him to have all these values and all this knowledge that he clearly doesn't.

Harry has never been what you would call socially skilled, I think. :)

Yes, I need to correct that typo, thanks!