Is it normal to want to see your friend or someone around the same age as you's ?

Im 12 also and I think you might just want to know if your body is the same as other guys. Id say if you just want to ask start a conversation simple. Start going on until you might end up talking about any part of your body. Then just say basically say hey im a little nervous about down there. Then ask questions you have but try to make it flow together.