Emotion?

What are emotions? Emotions are a thing you feel, right. Something that happens naturally. Something you feel without even thinking.  You would never think that something so big, so life changing that could make you lose that part of yourself completely. 

Well I knew someone that did. He lost someone that he loved so much that when he lost her he lost a part of himself. He lost the person he thought he would love forever and with losing that he lost his ability to ever love someone again. To ever feel anything about or for anyone or anything. He lost his emotion.