What is... the meaning of love

What is...
Someone giving everything up for you, even their own life
What is...
Someone always being there for you when you're sick or even depressed
What is...
Someone helping you deal with all your wrongs even sins that have left no on to turn to
What is...
An emotion that runs deep within our soul, causing us to act in certain ways
What is...
Something shared between two people to bind them so strongly together
What is...
The greatest sacrifice no one could have expected but yet so willingly let happen
What is...
The purpose of marriage, binding two people together for ever
What is...
      The meaning of Love