The girl feels increasingly unappreciated in a relationship, and she keeps making a promise to herself not to go back to the guy because he's only interested in sex; he's not emotionally involved, he's not going to give her more and he finds it all too easy to leave her behind when he's taken what he wants.
She doesn't have anyone else to go to, though, no one else who cares about her one way or another. No one else who even cares if she's dead or alive....so she keeps going back to him, but "I'm not yours anymore" is probably her way of saying that she's no more his than he is hers. They're both in it for sex only; no emotions, no trust, no hopes or dreams of a future anymore.
The girl feels increasingly unappreciated in a relationship, and she keeps making a promise to herself not to go back to the guy because he's only interested in sex; he's not emotionally involved, he's not going to give her more and he finds it all too easy to leave her behind when he's taken what he wants.
She doesn't have anyone else to go to, though, no one else who cares about her one way or another. No one else who even cares if she's dead or alive....so she keeps going back to him, but "I'm not yours anymore" is probably her way of saying that she's no more his than he is hers. They're both in it for sex only; no emotions, no trust, no hopes or dreams of a future anymore.