Many people that are 'emo' did not choose to become one, they just are. I wrote a hub on this subject, maybe you might want to have a read -
For those that are ' emo' display their emotions to all around. There are forums you could visit, which will help you understand the 'emo' way of living.
The emo lifestyle is not for everyone, find your own way in life. Above all, be true to yourself, do not try to be something you are not.