I'm a sociopath, and I need help understanding people?

Before I start, I am not completely emotionless. I have some feelings which i can't explain for my family. That's all. I can't feel anything towards anyone. I can feel happy, and I can feel sad. I don't miss people, and I could like them but if they were to dissapear the next day I would not care. Judging from my childhood I used to be a troublemaker all the time. I would not mind hurting other people to get what I wanted, and not because Im a bad guy just becayse I can't care. Im still in high school and I got lots of friends but I have to fake every single move I make. I need a little help understanding a girls mentality, because I don't want to stand out as a loner. So two things, what do girls feel, and what would be the best solution for me. ( I don't have trusted adults I can talk to and I really don't want anyone to find out im like this)