oh god.. i almost fainted at some of the.. uhh... awkward rhyming you seemingly just threw in there.. heres a few examples..
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"i can't believe you don't understand that i was the one.
You took my heart and fucking smashed it, yeah, just for fun"
and
"Keep telling lies, straight to my face, it only makes things worse.
"Doctor doctor, we've got no pulse", "quick go and get the nurse!""
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uhh but other then that its an overall good song, a little odd in some places but keep writing, you just build upon your songwriting skills overtime.. at least i hope you will ^^ thats what generally happens when you practice