i think this song is about how she's been screwed over and hurt in the past, so she's used to doing the same to others. but now shes with this new person, and they feel so right. he keeps her warm when she feels cold inside. but shes afraid she'll mess it up, or even that he'll end up hurting her too. so even though she has someone to keep her warm, she's lonely and finds that same warmth through her "friends," coffee and cigarettes.
i think this song is about how she's been screwed over and hurt in the past, so she's used to doing the same to others. but now shes with this new person, and they feel so right. he keeps her warm when she feels cold inside. but shes afraid she'll mess it up, or even that he'll end up hurting her too. so even though she has someone to keep her warm, she's lonely and finds that same warmth through her "friends," coffee and cigarettes.