Does this general thing happen in every relationship?

yeah with every relationship that long, there is a stage where you feel like "ugh! I hate everything about you!!" when you really don't. Like with my ex of about the same time, there was a point when I would think stupid things like " I hate the way he breathes like that!" or "EWW I hate how he chews its so effing annoying!" Itll go away I promise.