Lana is singing about how even though something can hurt immensely, you can still want more of it; that you can know the effects someone can have on you, but sticking with them because, naturally, you still want to hold on to something that is pleasant even if you know they're not good, you should let go of them. Lana sings about this in many of her songs; the idea of something keeping you attached to another, even if it is unhealthy or obsessive(Diet Mt. Dew, Dark Paradise) Hence the bleeding and getting hit, but still wanting more. She also sings about how the man is like crack to her but she really doesn't want to leave; even though she probably should.
Lana is singing about how even though something can hurt immensely, you can still want more of it; that you can know the effects someone can have on you, but sticking with them because, naturally, you still want to hold on to something that is pleasant even if you know they're not good, you should let go of them. Lana sings about this in many of her songs; the idea of something keeping you attached to another, even if it is unhealthy or obsessive(Diet Mt. Dew, Dark Paradise) Hence the bleeding and getting hit, but still wanting more. She also sings about how the man is like crack to her but she really doesn't want to leave; even though she probably should.