Unconditional love is known as affection without any limitations, or love without conditions. This term is sometimes associated with other terms such as true altruism or complete love.

In Christianity, unconditional love is thought to be part of the Four Loves;

affection, friendship, eros, and charity...
In psychology, unconditional love refers to a state of mind in which one has the goal of increasing the welfare of another, despite any evidence of benefit for oneself.

The civil rights leader Martin Luther King Jr. was quoted as saying "I believe that unarmed truth and unconditional love will have the final word in reality"
True, unconditional love doesn't run away when things get tough.
Someone who loves unconditionally not

only loves the other person despite these flaws, but they also love them because of them. The easiest example is always immediate family, children...