What is missing.?

Ok I don't know if this is going to make sense nor help. I am a 15 year old and I have a natural education of psychology. A great understanding of emotions and a good judgment of character. I'm pretty gothic. I love darkness, blood, the shade black and the colour red. Pain is pleasure and pleasure is lust. I feel like I have this other vision of folk. The only emotions I know are happyness, depression, bitterness, lust, jelousy desire .. love. I can see things that others don't. For example the lies one's teachings or the tension, jelousy, cruelty, anger one shows. The blindness of one who thinks that somebody loves them but really doesn't. Now my question is.. what's missing from me? I do not feel myself lately, I feel like something has been stolen from my soul. An emotion perhaps. I just feel cold, alone and dark. Like I'm lifeless and nobody cares. A bird not being able to fly anymore Does anyone have a fair clue what is wrong? Email me if you must, just help me.