He said something pretty profound in an interview, something that I found to be true from personal experiences :
“It’s a song about getting so close,” he explains, “so close to somebody that the intensity of the love that you feel for that person has this amazing potential to make you feel amazing hatred for them when something goes wrong, because you have that capacity. You feel like you know them so well, you feel like they know you so well. So they can really get into you and disturb you.”
Anni 
