Hey, this is a little about me

My name is Greg, and I'm 16.
First and foremost, I would only like to hear comments that are helpful or words of good intention, anything else such as "Just give it up", I will not appreciate, and I will ask the person to leave my thread.
I am 16 and a junior in High School. I have never been like every other guy, I'm not macho, arrogant, and say yo. At all.
All that has really been important to me is making the people that respect me and care for me happy, and of course I have my own dreams, I want to major in Psychology, and by the time I die I'd like to have left my mark on this world and change someone's life for the better, in other words, I want my life to have been one worth living.
I haven't dated many people and most of the relationships have been very mediocre.
Of course, there has not been one that's really been worth it, since they're just High School relationships, but one of the girls has influenced my life more than she will ever know. She's the sister of an old friend that I met last January 2009. We began dating in February after we started talking more frequently, she had some problems that had her suffering, and I was able to help her out, I got her on the road to healing these problems. Once we started dating, her sister was extremely pissed off at me, she wanted nothing to do with me, but I kept on dating her anyways. By the time a month had passed I had fallen in love with her, she's the only girl that had ever made me feel as important as she did. She was exactly what I needed, everything I wanted. Then, for some reason I still don't know, she broke up with me, I didn't know what to think, I was confused and felt like the world had ended. I made a mistake... a huge mistake, I began cutting myself, and when she found out she felt it was her fault and she did too... Her mom found out that both of us were and she demanded we never speak or see each other again. A few months later, we found a way around her mom's plan and we began talking again, she still had feelings for me and wanted to be with me, as I did with her. However we couldn't see each other and we slowly stopped talking to each other. That summer she lost her virginity to someone she did not want to lose it too. She was dating the person but he over powered her and she couldn't get out of the situation. Her mom found out about it and many consequences were put into place, she is living a life of hell right now, she started smoking to get away from her problems, but its not helping, its only added to her problems. However, we are now in the same school and I can see her again, I saw her for the first time since April 2009, on Monday. She seemed fine, but its only because she isn't home, I know that much. She told me she was really happy to see me again, and she wishes she could more, she said she still wants to be with me again, but her mom wouldn't let that happen. Although neither of us has cut since then, her mom wouldn't believe it, and she won't trust any guy with her since she lost her virginity... There seems to be no way out of the situation since at school, we have to be cautious of her sister seeing us together and her mom always finds out who she's with outside of school. And even if she was to go against her mom's word she would be sent to live with her dad, which would only add to her misery and I can't let that happen to her. I don't want anyone besides her. I want to help her become happy and healthy, thats what will make me happy. I love her, and I don't care about what anyone else thinks.