It's when someone cares enough about you that they would sacrifice themselves for you. When someone loves you, they consider your needs ahead of their own. It's when you feel that you can't do without them and you know that they feel the same about you. It's rare, that's what it is.
The most sought after commodity in the world. You can't buy it even if you knew where it was. It can be there one moment & then it's gone. Some would die for it. Others lie for it. No matter how rich or poor you are it's something you want in your life. Some who have it don't deserve it & others who are lucky enough to have it throw it away. often the ones who do deserve miss out. It can last forever but often doesn't. I think that's a fair discription of love.