"Pale Blue eyes" is about how the main artist, Lou Reed, Had a really serious girlfriend, Shelley Albin, and they were good for awhile then thins started to go bad . The argued a lot and shelley was his whole world but she ended up getting married not to him but to someone else. So supposedly he had an affair with her but he knew it was wrong so they ended it . Overall this song is about how you can love someone so much but there is pain that comes along with it. And sometimes, affairs happen. Sometimes, you start to not like the person you once loved. The person you thought of as your " mountain top".