I think this song isn't so much about a break up but instead an on again off again relationship. He's saying that he doesn't want to lose her, but the next time she leaves is really the last one and she better go far, far away because if she's close he'll still love her.
I think this song isn't so much about a break up but instead an on again off again relationship. He's saying that he doesn't want to lose her, but the next time she leaves is really the last one and she better go far, far away because if she's close he'll still love her.