Simon & Garfunkel - Kathy's Song Lyrics Meaning

A beautiful melancholic song about someone coming to the realization of what he thought he knew as real. Is not as real as it seemed after falling in love with this lady. Coming to a conclusion that the only thing that is real for him is Kathy and the time spend being in love with her, who he believes is the only real thing[love] in his life right now in the present to hold on to and preserve. But he is or both are spiritually torn apart for whatever reason. Where he seems more in doubt about his beliefs, probably with god and religion when being away from the love that he shared with Kathy, when they were together that has been real to him. Where now he's mind is diffused all over the place, afraid not to turn himself into a deplorable basket case. Desperately hopeing not to lose the love for her while yearning to only be with her in England where she's at now. Dreaming and thinking about her there, while symbolically watching himself like ''the rain'' falling, ableing him by grace to continue,if only in thought to still be with Kathy in memories of love and caring until they meet again in hope not to ever die like the rain drops have fallen.