Return to addiction (idea)

[This summer] I met a girl who could [sing beautifully], but who was a smoker. Over the course of a month I [got to know her] better and better, until after I'd [known her] for about two weeks I couldn't take it anymore...

I went up to her and said, "You know... smoking will kill your [singing voice]."
And she looked straight back at me and, with her voice solemn and a tear in her eye, said "[I know]."

That is addiction.