My iPhone 4s front camera always reverses the image?

Whenever I take a picture with it, it reverses the way the camera is?
(So if I'm on the left side of the camera, it will turn it so I'm on the right)
How can I change this?

It doesn't reverse the image. It shows you exactly what it sees. It's a camera, not a mirror.

If a person was standing opposite to you, facing you, and you move left, doesn't the other person see you moving right?

When it's showing you the front camera it is acting like a mirror, an mirrors are always the reverse image. I don't believe there's a way for you to change it.

Download a photo app the can flip the image