Creeping through the house, makes it sound like something that has always been there but he's just turned a blind eye to.
But then the part about wishing he never knew, makes it sound like something that happened that he didn't realize was bad and now that he realizes it's bad, he doesn't want to think about it. (an example... a child gets raped then they go to school and hear that when someone touches you this way it's wrong and suddenly they're like "OMG! I was raped!")
Creeping through the house, makes it sound like something that has always been there but he's just turned a blind eye to.
But then the part about wishing he never knew, makes it sound like something that happened that he didn't realize was bad and now that he realizes it's bad, he doesn't want to think about it. (an example... a child gets raped then they go to school and hear that when someone touches you this way it's wrong and suddenly they're like "OMG! I was raped!")