A symbiosis is an interaction between two different organisms

A symbiosis is an interaction between two different organisms living in close physical association, typically to the advantage of both.
Between the girls who share nude photos on the Internet and we, who enjoy this kind of stuff, there's a symbiosis. We satiate part of our sexual appetite and they enhance their egos and self-esteem when they feel desired by so many men. It's a present's win-win situation. Symbiosis 2.0