An outsider's love is pure,
An outsider's love is unconditional.
There is no duty to maintain the love.
There is no pressure to maintain the love.
It is purely intuitive.
It is purely heartfelt.

A family love is conditional.
A family love is obligatory.
To stay in society, you cannot not love your family.
To stay in society, you cannot not be loved by your family.
It is solely dutiful.
It is solely egoistic.

As much as I love you, I will never make you my family.