The sexual ones.
Mutualism is an interaction where organisms work together for the benefit of all parties involved. Each organism provides something the other needs, creating a symbiotic relationship. This helps both organisms thrive and succeed in their respective environments.
The relationship between two species who mutually depend on each other for some aspect of their survival is called "symbiotic" mutualism aka co operation where both species benifit
ants
The cattle egret and the African ankole have a symbiotic relationship called mutualism. In this relationship, two different organisms work together and each one benefits from it.
a relationship where the two people work together
Colonies of unicellular organisms can work together.
Many people don't know this but they were in a relationship together and once they stopped being together it made the work relationship even harder so they no longer work together.
If your relationship does not work short-term, I don't know how it could work long-term.
A relationship
similar cells work to produce tissues then tissues work together to form organs then organs work together to form organ systems then organ systems work to form organisms!
These are called Organisms.
Symbiosis