While I agree with the general idea of outer beauty fading with time, for me this song has a melancolic, and maybe slightly bitter quality. I picture the protagonist as a woman who is beautiful and a bit jaded, and offers her beauty to find warmth and love in hope that a partner will ease the sadness she feels inside (can you caress broken wings). She does realize that it will most likely be shallow and not last (castles melt in the sand), but is willing to try if only for the comfort it will provide her while it lasts (but you could still touch my hand/and have a dream, then go away).
While I agree with the general idea of outer beauty fading with time, for me this song has a melancolic, and maybe slightly bitter quality. I picture the protagonist as a woman who is beautiful and a bit jaded, and offers her beauty to find warmth and love in hope that a partner will ease the sadness she feels inside (can you caress broken wings). She does realize that it will most likely be shallow and not last (castles melt in the sand), but is willing to try if only for the comfort it will provide her while it lasts (but you could still touch my hand/and have a dream, then go away).