A friendship or partnership that complements each other...

I got the following message from a friend in Spain, that is poetically written. But unfortunately, I have no idea who the author is, but I still want to acknowledge the author for a piece well written.

''I am a rose, you are my thorns, clutching to me, protecting me. I am the sun, you are my rays, helping me to shine and to be all that I can. I am a lake, you are my water, filling me with ideas, dreams, and hopes for the future. I am a tree, you are my leaves, sharing who and what I am and becoming an important part of my life. I am a heart, you are my beat, beating rhythmically to my happiness, my fear, my sadness, my excitement. I am me and you are with me, to share all that I am, to share life, love, and happiness.''