This is how i think it should be written
Look you told me you love me but i know that deep inside you never cared about me. So now im lying here tonight ready for death..Why couldnt you just tell me straight out? And i could have saved my wrists from the pain and the blood...So go and take her back but when your on her arms kissing you ill bet you the only thing you will be thinking about...WHY did you just save another soul???
this is the grammaticaly correct way to write it but the emotion is great