Well, you've got a good rationale for how the story is developing. I suspect Harry & Hermione may start off as "friends with benefits" but find their emotions changing as they become more intimate (Ron's loss, but he wasn't apparently interested enough to actively pursue Hermione). What should be interesting is if/when Hermione's list include a threesome with her, Harry, and Gabrielle. If the list also includes a threesome with Harry and another wizard, I wonder who'll she'll pick? Methinks Ron has managed to remove himself from consideration.