I believe the song is about a breakup and the "Because because" is in response to the reasons as to why she's choosing to end it.
And when she says "And when I'm tired, I'm so very tired
And when it's done, it's like I've killed someone" I think we can all relate. Breaking up with someone never feels that great though it might be necessary. You figuratively "kill" someone in the relationship and it's a tiring process.
I believe the song is about a breakup and the "Because because" is in response to the reasons as to why she's choosing to end it. And when she says "And when I'm tired, I'm so very tired And when it's done, it's like I've killed someone" I think we can all relate. Breaking up with someone never feels that great though it might be necessary. You figuratively "kill" someone in the relationship and it's a tiring process.