Humbert, is our unreliable narrator and I think that this is done extremely well. We see our protagonist "Humbert" fall in love with the 12-yearl old Delores, as it had reminded him of his first love as a child. Growing up his love interest remained in that state, and unknowingly grows into a pedophile with him telling us his experiences with blinders over his "hell-like heaven." With Delores, or his "lolita."