The meaning behind this isn't really behind it since it's pretty straightforward. A girl that a guy has had a thing for, for a while keeps screwing him over. She's a slut. He knows it, everyone knows it ["...show me those teeth under those famous lips of yours."]. But everytime this happens, he always ends up going back to her, or she always finds her way into his head and he can't get over her ["I'm finding that all of the things that you've thrown away have found their way back to my door. You're like a fever I can't get over."
The meaning behind this isn't really behind it since it's pretty straightforward. A girl that a guy has had a thing for, for a while keeps screwing him over. She's a slut. He knows it, everyone knows it ["...show me those teeth under those famous lips of yours."]. But everytime this happens, he always ends up going back to her, or she always finds her way into his head and he can't get over her ["I'm finding that all of the things that you've thrown away have found their way back to my door. You're like a fever I can't get over."