Well, I get really nervous and shy around people I know but I seem to not be able to go up and just talked to girls. Unless I know them well or if they talk to me which even in group work I get to nervous to talk when girls are in it and if I do they can't hear me. But around guys I talk in a shy voice? Is there something wrong with this though? Should I not be so shy around them and nervous. When they talk to me no matter if I'm attracted to them or not I start the blush and I don't have any idea how to respond I would like help on how to talk or at least approach them.

Take baby steps meaning make it a point to say something small to one girl a day. Something like "I like your haircut" or "Did you see The Simpsons last night" or "have you seen Cold Play's new music video" and strike up a conversation that way. This will allow you to get more comfortable with talking to girls. If you mess up, so what. You don't have to be perfect in every conversation.

I am living with someone at the moment. But about 2.5 years ago when I first met this person, I couldn't talk around this person. I got so nervous because this person was truly the best looking person alive. And now we live together. So start with baby steps and you will be just fine.

How old are you?

This sounds like you have an issues with your sense of self, meaning you are not confident in your opinions, thoughts and deeds. Of course this depends on how shy you are being, if it's crippling then you probably have some work to do but if you are boisterous around friends and it's only strangers that you feel shy around it could just be who you are.

Sometimes people's personalities are stifled by worrying too much. If you are not behaving in a way that meshes with your personality then that is a sure sign a change is needed. You are frustrated now, so I think you need to focus on "coming out of your shell".

There is nothing wrong with being shy as long as you are open to conversation. If it stresses you out a ton and you continue to freeze up you do need to practice conversing with people. Start by talking to friends of friends that you don't know well and talk about topics you are passionate about.

Also work on yourself, if you feel down about some aspect of yourself try to improve that it will help your confidence greatly. The more confidence you can garner the stronger your presence of personality will be within a social group. I know it's tough to figure out, I've been there, but after time it will happen.

Remember, if you do meet a girl you are attracted to that they could be attracted to you as well and feeling nervous/shy. However, just like you, they are people too, enjoy talking and most likely won't bite your head off for trying. If they do then you don't want to be around that person anyway.

Thanks for the help and I'm 15