I really love this song and when I listen to it I can really feel it. I think its about a love between 2 person, at the first it tell us about the vampires, when night come, vampires come out and put they spikes in peoples heart, but the boy loves the girl so much so he tell that you put spikes in my heart cause in that way its also a joy to me. And he tells to the girl that he will always protect her and he will never let them hurt her. Maby my meaning is incorrect to you, but its an awsome music, because music comes from people fellings, and you undresstand it, even if you have diffrent language or culter. I love this song its amazing.