I agree with most other opinions, I interpreted the song somewhat like this;
She is in love with a man [Mr. Blue], who is quite sad and has been for some time. She desperately wants to help him, and encourages him to feel better, but in the end there's really nothing she can do, and so decides she has to leave.
I agree with most other opinions, I interpreted the song somewhat like this; She is in love with a man [Mr. Blue], who is quite sad and has been for some time. She desperately wants to help him, and encourages him to feel better, but in the end there's really nothing she can do, and so decides she has to leave.