I think the idea that it's about drugs may be very close.
The words "clean white love" might mean the guys is like heroine to her.
"This love is a disease, there is no cure... ...but it's kind to be cruel."
Heroine having both the bad side and the good side of it.
And then, "What are you doing? What ya doin? What ya doin to my head?", like the drug.
SO basically, I think there is a meaning inside the meaning. The song is, without analyzing, about drugs. But as it goes on, the drug seems to be a metaphor.
I think the idea that it's about drugs may be very close. The words "clean white love" might mean the guys is like heroine to her. "This love is a disease, there is no cure... ...but it's kind to be cruel." Heroine having both the bad side and the good side of it. And then, "What are you doing? What ya doin? What ya doin to my head?", like the drug.
SO basically, I think there is a meaning inside the meaning. The song is, without analyzing, about drugs. But as it goes on, the drug seems to be a metaphor.
Just my view.