I am a high school sophomore and I have not hit puberty yet so I have a high voice and I am short unlike other guys. I have a lot of friends that are guys ( I am a guy btw) but I don't really have that many friends that are girls. I haven't been invited to parties because I don't talk to girls. I have the balls to go up to them I just don't know what to talk about. any advice on what should I talk to them about?