Translation:

If I walk away from you, I do it only because I’ve come to understand that I’m in your life the dark cloud that foreshadows precipitation. I must walk away so that you stand a chance of bettering your life. Go on to lead a happy life. In the meantime I’ll try to suppress all memories of you. I must return to being the disappointed man who seeks the love of a woman in spite of previous bad experiences. The blue sky — where dreams once had their home — has vanished. Desolation has returned to me. I’m disillusioned.