it means that she has been used by a boy to get what he wants and the girl regrets it "something tells me that I've kissed a fool" means that she regrets it "something tells me in your pretty eyes that those lips of yours were telling lies" which mean that the boy was pretending to love her and not actually meaning that he does when he says it. The girl feels cheated and worthless but she couldn't have loved him anyways
it means that she has been used by a boy to get what he wants and the girl regrets it "something tells me that I've kissed a fool" means that she regrets it "something tells me in your pretty eyes that those lips of yours were telling lies" which mean that the boy was pretending to love her and not actually meaning that he does when he says it. The girl feels cheated and worthless but she couldn't have loved him anyways