I Have Absolutely No Friends in High School?

I have always been the type of person that likes to be very involved with school and do the best I can. My parents come from a 3rd world country, so the way I see it, I get a wonderful free education that I want to make the most of. I am my freshman class president, in student council, debate club, soccer, science olympiad, Model UN, and SADD. I was also in the top 10 of my class last year (they didn't tell us our exact rankings.) I guess if you had to asky anyone what my reputation is, they would say it was for being really smart.

Everyone around me cares so much about dating and hanging out. It seems like I have nothing in common with people anymore, not even my best friends from middle school. They all make plans to hang out without me, and they don't even talk to me at lunch.

We used to be so close in middle school. We were all just girls who really liked to read, run, and listen to Justin Bieber..lol. Now, they're not really interested in their schoolwork, or being involved. The only time they want to talk to me is to get answers in class.

We used to be the 4 best friends ever, but their is one girl in particular, who has completely turned on me. She talks about me behind my back, calling me the b word, and saying all I care about is school. She told most of my other friends not to be friends with me. She said I'm ugly and have no social skills and I could never get a friend of a boyfriend. She also had a birthday party over the summer, that she didn't invite me or my brother too, she didn't even tell us, we found out by someone accidentally mentioning it. Which really hurts because e were so close that we asked her to help us coplan our party.

This same girl who seems to be the leader of their group of 3 used to date my twin brother. She said that my brother shouldn't tell anyone they dated because all it was was a crush my brother had when she had actually asked him out twice. My brother said he has his own friends and he just doesn't care what she does.

But, for the 1st week of school I had absolutely no one to sit with and I tried to make new friends, but it seems like at my school everyone has a group and they won't let anyone in. I have a twin brother and he says that if he sits with me at lunch/ I sit with him it'll be uncool and unfair to him because then he'll lose his friends. That makes me feel really bad because in middle school when I had friends and he didn't I would bring my friends to him or even leave the table when he was sitting alone. But he says that eating lunch with him is too big a favor to ask in high school. When he told me that I felt like someone had smashed my heart into pieces. I love him so much, but he talks about me behind my baack too, saying how much I like school, and whenever I need something (lunch money, or a partner in class) he won't help me. I used to give him my lunch money and not eat just so he wouldn't feel hunger, and he treats me like this now. He calls me a nerd and mostly acts like he doesn't know me.

I used to be great at making friends, but lately it seems like I just don't know what to say or how to approach people. My brother is really popular, and people like him more than me. I've asked him for help in making friends, and he won't help me. Or he'll say, you'd have friends if you stopped doing your schoolwork so much. This is the same person who asks me if he can copy my homework because he never does it. I also tell him everything, but whenever he knows something he'll tell me you don't need to know.

I made 2 close friends who I told this stuff too, so now I have someone to sit with atlunch, and its better, but I can tell they are getting kind of jealous of me when I do well on tests and they don't.

I just don't know what's wrong with me. I feel like a curse. I have a huge dream of going to Harvard University and I really don't want to drop everything I've worked for (class president, editor of newspaper, track point scorer) and let my parents down.

Its only the 3rd week.

What should I do? How can I make new friends? What should I do about my twin brother?

Any tips or advice would really be appreciated!