It does seem that Ron and Hermione will end up. I've had relationships where the gal "paid attention to me" but ended up with HIM!

(It should've been MEEEEE!)
But we're such close friends that if anything did happen to HIM

we'd probably end up together.
As far as Harry, mebbe he'll end up with Dick and Tom...
It's hard to say where the author will take us and Harry as far as the heart goes.