Hi. I can relate to some of the things you are going through. I had a good friend that I spent all my time with until junior high when he just suddenly refused to hang out with me. We lived along the same route, but he would tell me not to walk home with him, he wanted to start hanging around with the kids that were cool, and I wasn't. I didn't date during high school and was picked on. For years after high school, I was sure that if I heard laughing from a group of people after I passed them, that they were laughing at me.
People say that high school eventually ends. That may be true, but the damage that some kids aquire during those years doesn't.

You've done a good job working on changing your outside to look like the person you feel you want to be. Some of your physical attributes such as "man breasts" which is gynomastia, may be hormonal in origin and it would be a good idea to see a Dr. and have your hormone levels checked. I do understand where that would cause a great deal of self esteem problems and self consciousness. And lets face it, guys can be pretty brutal to each other. We seem to have more difficulty accepting body types that are not what we consider normal in other guys, and some can be downright mean.

Realize that there is a great amount of variance in penis size. Unfortunately, both guys and girls tend to pay more attention to that then they should. You may be within the normal ranges, but if not, again, there could be a hormone problem. I don't have a sister, but its seems to me that the girls in high school compared breast size. I'd catch the tail end of conversations as i walked by though I don't know if it is a big thing for them.

See your Dr. about your chest. Having a hormonal imbalance does not mean that you are gay or girlish. It just means you have a hormone imbalance. There are plastic surgeons that can remove excess breast tissue is it is causing you severe problems, but at this point, with all you have been through, that alone will not change the way you feel about yourself. Seeing a therapist is a good idea to help you regain your self esteem. Its a hard thing to do alone and you shouldn't be embarrassed to ask for help.

Sam2