When acted upon, deep-seated jealousy establishes a hate-filled position that can demolish even the strongest relationships, and can go to the enormity of destroying lives.
I researched the growing envy Gene has towards his best friend, Phineas. Gene realizes his hate for Phineas and acts upon it in the tree. His jealousy goes to the extremes mentioned: demolishing relationships and destroying lives. Even if Phineas hadn't died Gene changed his life forever