Shadow Eclipse

I looked around one sunny day and found my pal there right away. Lying flat upon the ground— the only one I've ever found. He copies every move I make— always faithful, never fake. Yet one day upon my morning walk I turned to him for casual talk. And watched before my very eyes, he disappeared, to my surprise. What a loss, my treasured friend. How had he come to such an end? Oh how I hate the sun's retreat— leaving nothing at my feet. I nearly cried out loud, but it was just a passing cloud that was the cause of this eclipse. I urged my fists to ease their grips. So if you see me looking down, and on my face a dismal frown, stop and give me your best smile, and pause to chat with me awhile. Then my own eclipse will end, for I'll have found a brand new friend.