At first I just thought that Severus had manipulated Harry into a relationship in which Severus was completely getting his way...but that Harry was essentially 'Happy'. Then the flinching was mentioned and I started t wonder about the curse, and potions and Potions Masters...and exactly what Severus *has* been up to to control Harry. And, what exactly is it that makes Harry flinch? Is Severus the curse caster?
This is one of the most outwardly happy seeming but sneakily disturbing fics I've ever read. Excellent job. It really made me stop and think about what was going on, on whether the nature of what was going on matter as long as Harry was happy...but if he's not under free will then yes it does matter and WOW is this creepy and just really disturbing.
And I can totally see this. Both Harry and Severus are totally in character here which creeps me out even MORE.