What is love?

Some say: Love = Blind.
Some say: Love = Respect in it's highest most evolved form.
Some say: Love = Lust.
Some say: Love knows no boundaries.
 
Or are there many forms, shapes and sizes of love?
Maybe there isn't just one simple answer that explains it all. And it's more deep; than just one or two "simple" aspects (of live).
Maybe the feeling you have(at that time), that you call love, is a fellowingship of love and one of the above or one of the many not named.
Maybe love is just a mixure, of different emotions (above), chemical effects (pheromones and neurotransmitters), evolution and (for now?) unexplainable concepts etc.

What do you guys think?