Love is it just a word or really a feeling?

If someone tells you he doesn't love you,you feel weird
Why do we want to be loved?
Why do we want to share  our love with someone?
Why are we searching after it our whole life?
How can it be so powerfull if we can't explain it?
Why can't we explain it
When will we know the answer?
Will we ever know the answer?

Love control our life
It has it's variety of it
All kinds of the same feeling
It can change itself into other feelings
That we can't explain
For example hate or even worse..
One kind of love can shift into another
But does all it's kind are really love?

What do we call love?
Why is love it's name?
Why do we want to feel love so much?
Love is a painful thing
Why do we need it?
What are we using it for?
Why? just why love..
Why?