Unconditional LOVE - What is it ?

Unconditional Love - very common words  we come across nowadays.
What it could really mean?

Popular meaning is, not to put loyalty conditions in a love relationship.
But we got to go beyond that and take a broader spectrum of love including romantic love to understand what unconditional love could really mean.

Beside romantic love, we have mother's love, brother's love, friend's love and many many more.
There are as many love as there are relationships.
We can easily see,
In all these relationships, love is conditional because relationships are conditional.
Mothers'love is only for her child and so are brother', friends, partner's and so on.
In our empirical life we can't find any love which is not based on a condition. 
If we remove the conditions, love becomes abstract, an idea without any concrete reality.
Or, is it the other way around.
That is,
have we narrowed down the universal unconditional love to suit our empirical conditions?
If we take the sunlight as a metaphor for love.
We can equate sun light in the open space to unconditional love.
 Inside a room, sunlight enters only in the shape of the windows -restricted and or tainted.
It is qualitatively altered.
In the same way, 
when unconditional love is  manifested through our relationships,
it is narrowed down and attain different expressions - romance,care, affection, empathy,
regard, respect and so on.
All these feelings and expressions are limited versions of that unconditional universal love.
Its original nature is said to be compassion towards all.

So, the love we have is unconditional but limited by our empirical conditions.
If we can remove the conditions, then it will manifest itself in full glory.
Our conditions are ego centric - for its welfare and protection.
So, as long as we have this ego centric view of life,
unconditional love will remain an ideal or an idea.
If one can transcend ego or personal consciousness and there by transcending the conditions,
that universal unconditional love may come into being.
It is not making the windows bigger but walking out of the room into the open.

Those, who attained it say,
it is not only compassion but also intelligence that reveals cosmic purpose and order.