Lyric discussion by graceMazin 

The song is about heroin addiction.

"She don't know no lover None that I ever seen But to her that aint nothin But to me it means everything"

This means EXACTLY what it says. When you are addicted to opiates, you don't feel the urge to be intimate with other people. Most opiate addicts are single and loners, and they don't get lonely like normal people do because the drug satisfies endorphins in the same way a lover does for someone who's not dependent on opiates. Heroin is a very solitary drug in that you'd rather just chill within yourself than be social. It's a warm comfort blanket the same way a lover is.

To her, the fact that she doesn't have a lover means nothing to her, because the opiate is her substitute, it fulfills her and makes her feel good and so she doesn't need a lover.

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