I took the song as being about a relationship where the girl is still in love with another man (hence the heart being already stolen) and the part of her that never dies is the love she has for the other guy. And the new guy can only hold her because he can't ever penetrate her heart because she gave it to her ex.
I took the song as being about a relationship where the girl is still in love with another man (hence the heart being already stolen) and the part of her that never dies is the love she has for the other guy. And the new guy can only hold her because he can't ever penetrate her heart because she gave it to her ex.