I think this song's about a complicated relationship, (the blood) is a metaphor for the passion she feels, blood can also show the deep connection between two people, that they are bounded by blood ties. the image of blood also shows the gruesomeness and the violence in their relationship, the emotional side she feels the brokeness that is tearing her up inside, and she sees him as a bloody being that she shouldn't be belonging with him. Also the 'bloody' valentine annotation, could also show her anger at him, 'bloody' could also be used as a swear word.
I think this song's about a complicated relationship, (the blood) is a metaphor for the passion she feels, blood can also show the deep connection between two people, that they are bounded by blood ties. the image of blood also shows the gruesomeness and the violence in their relationship, the emotional side she feels the brokeness that is tearing her up inside, and she sees him as a bloody being that she shouldn't be belonging with him. Also the 'bloody' valentine annotation, could also show her anger at him, 'bloody' could also be used as a swear word.