That's your perspective if you read a lot of manga =).
Deep friendships usually don't become romantic relationships, because it's far too comfortable to stay where you are.
It's pretty shounen-esque, guy stays with hot girl, oblivious to her and they interact pretty much the same.
I've never said limited it to friendships, but it's very unrealistic to think that a guy and a girl hate each other would end up together. But that's manga.
Or the idea that every friendship between a guy and a girl must always culminate in romantic interest.
Heh, well consider the fact in their past few meetings, usually Harima is the one to initiate contact rather than the other way around. (except for the hospital meeting)
That only happens in OOC WAFF riceball fanfics, you know.
You can't see the other way if you're in the Typical Shounen Girl-hates-guy-but-really-likes-him Boat =).
You can't see it if you're too busy looking for the Nice Boat.
Ultimately KJ will decide this, it's going to be ackward and I feel the most interesting way will be through with Yakumo. Yes, although some people do not agree with this, reading through some of the stuff Eri and Harima go through is very textbook.