I am a Ball, You are a Puzzle

You asked me in not so many words, I thought;
So I pieced you together in my mind. How have I done?
I tried to discover you, but you turned from me
Like a night phantom. You appear and disappear;
You mingle interest with disinterest until I feel I'm like the rest,
A trinket on your shelf, shiny and fun to muse at sometimes,
But you don't see that I'm always here, searching into you,
Though I don't play your mind over in my fingers like some sparkling ball,
Fun to muse at sometimes, illuminating my eyes, my smile.
You hold the magic over me and are blind to my fear
That you will set me down again, toss me in the trash,
Or worse, never let me understand.