I see this song, as being about a guy that likes/loves a woman, but shes been hurt before so she wont let him in "Who ate your heart? You're cold inside You're not the one I hoped for" so he has realised that he has to move on, and he will see her on the "otherside" meaning when shes in happy again maybe they will meet again. Shes the wall of stone from the first line, deflecting anything he gives her emotionally and he is the house of fire - ready to warm her heart.
I see this song, as being about a guy that likes/loves a woman, but shes been hurt before so she wont let him in "Who ate your heart? You're cold inside You're not the one I hoped for" so he has realised that he has to move on, and he will see her on the "otherside" meaning when shes in happy again maybe they will meet again. Shes the wall of stone from the first line, deflecting anything he gives her emotionally and he is the house of fire - ready to warm her heart.