I have, occasionally, seen a story where characters don't talk because they've already gotten twisted up by trying to talk, and I think that works. That's what I'm going for when I do a plot like this, most of the time. But again, I think that's more common than the kind you're talking about, and for a reason; it's hard to portray an inarticulate character while at the same time giving enough of their inner turmoil that the audience understands them. Quite often, my reaction to a character like that is, "If they can think about it, why can't they talk about it?" Minus characters like Snape who have roadblocks of experience in the way.

I think you have to worry about more angst for Harry than Draco this story. If nothing else, I am very mean to him in the next few chapters, and he has much more trouble accepting his romantic feelings than Draco does.

At the same time that I love love love Harry and Draco being equals to one another, I have this huge weakness for stories where Draco is the possessive one and pursues Harry- which is why I've written more of them than the other way around. My brain appears to have this constant "Life was deeply unfair to Harry in the books, therefore he deserves someone to take care of him and to be the one wanted for a change" switch.