Don't worry about keeping this stuff off the board, that's what the off topic thingy is for.
You're at a tough age and a little venting and feedback every now and then will help keep things in perspective. Don't worry about being like or not like any other 15 year old in the world. Be yourself.
And like GJG said, you're not alone in not understanding the complexities of human interaction either, my friend.
I'm 46 years old and still can't figure out why men are only attracted to the snottiest, bitchiest, most ruthless women that cross their paths. Go figure. Must be the thrill of the chase, I guess.
Hope tomorrow is a better day for you.
Ask one of your girlfirends to "take a good look in your heart, tell me what do you see?" That'll really throw them for a loop!