We can define fictive kin as the individuals who are viewed as being a piece of a family despite the fact that they are not related by either blood or marriage bonds. Fictive kinship may tie individuals together in ties of love, concern, commitment, and obligation.
The term Fictive kinship may likewise be utilized as a part of a legitimate sense, and this utilization proceeds in social orders where these classes and definitions with respect to family relationship and social ties have lawful cash; e.g. in issues of legacy.
An evolutionary perspective is when a person looks at the human mind and human behavior and attributes it to an evolutionary survival adaptation. In this case, the professor believes that it is an evolutionary advantage to pair-bond.