I'm Not Calling You a Liar

This is my interpretation-thing:

"I'm not calling you a liar, Just don't lie to me. I'm not calling you a thief, Just don't steal from me, I'm not calling you a ghost, Just stop haunting me,"

I'm not entirely sure about this part, really. It sounds rather like she's begging her lover to be kind to her; I think he has hurt her before several times in the past.

"And I love you so much, I'm gonna let you, Kill me."

This is saying that she loves him despite the fact that he is no good for her, that he'll wind up killing her in the end.

"There's a ghost in my lungs And it sighs in my sleep, Wraps itself around my tongue, As it softly speaks Then it walks, then it walks with my legsTo Fall, To Fall, To Fall, at your feet."

I think the ghost she's talking about is kind of like this love inside her, the love she has for the man, but she doesn't really want to love him because of the fact that he's hurting her, but she doesn't really have a choice. The "ghost" is controlling her, and taking her to him in a submissive kind of way ("to fall at your feet"). And I think the rest of the song just repeats this.

"And when you kiss me, I'm happy enough"

His occasional kindness and love is enough to make her stay with him, despite everything.